Omnifactotum 0.12.0

• .NETFramework 4.7.2

  • System.Collections.Immutable (>= 5.0.0)
  • System.Threading.Tasks.Extensions (>= 4.5.4)

• .NETStandard 2.0

  • System.Collections.Immutable (>= 5.0.0)
  • System.Threading.Tasks.Extensions (>= 4.5.4)

• .NETStandard 2.1

  • System.Collections.Immutable (>= 5.0.0)

• net5.0

  • No dependencies.

• net6.0

  • No dependencies.

### Changes in 0.12.0 (since 0.11.0)

#### Breaking Changes

- Removed support of **.NET Framework 4.6.1**

#### New features

- `TemplatedStringResolver`: Added the static `GetVariableNames()` method
- `Factotum`: Added the `Assert(...)` method
 - For .NET 5+ and higher, the `conditionExpression` parameter is marked with the `CallerArgumentExpression` attribute
 - For the older .NET versions, the `conditionExpression` parameter is supplied only for binary compatibility between the different target frameworks

#### Minor updates and fixes

- Minor improvements in `OmnifactotumHttpStatusCodeExtensions.ToUIString()`
- Improved documentation on `AssertionMethodAttribute` and `AssertionConditionAttribute`

### Changes in 0.11.0 (since 0.10.0)

#### Breaking Changes

- `OmnifactotumEnumExtensions`: Added the `enumerationValueExpression` parameter to the `CreateEnumValueNotImplementedException<TEnum>()` and `CreateEnumValueNotSupportedException<TEnum>()` methods:
 - For .NET 5+ and higher, the `enumerationValueExpression` parameter is marked with the `CallerArgumentExpression` attribute
 - For the older .NET versions, the `enumerationValueExpression` parameter is supplied only for binary compatibility between the different target frameworks
- `OmnifactotumNullableEnumExtensions`: Added the `enumerationValueExpression` parameter to the `CreateEnumValueNotImplementedException<TEnum>()` and `CreateEnumValueNotSupportedException<TEnum>()` methods:
 - For .NET 5+ and higher, the `enumerationValueExpression` parameter is marked with the `CallerArgumentExpression` attribute
 - For the older .NET versions, the `enumerationValueExpression` parameter is supplied only for binary compatibility between the different target frameworks
- `Factotum`: Removed obsolete methods:
 - `CreateEmptyCompletedTask()`
 - `CreateEmptyFaultedTask(Exception)`
- Validation: Removed obsolete `NotNullOrWhiteSpaceStringConstraint`
- NuGet: Set `MinClientVersion` to `5.4.0`

#### Deprecations

- `OmnifactotumTypeExtensions`:
 - Deprecated `IsNullable(Type)` in favor of `IsNullableValueType(Type)`
 - Deprecated `GetCollectionElementType(Type)` in favor of `GetCollectionElementTypeOrDefault(Type)`

#### New features

- `OmnifactotumCollectionExtensions`:
 - Added the `WhereNotNull<T>` extension method
- `OmnifactotumStringExtensions`:
 - Added the `WhereNotEmpty<T>` and `WhereNotBlank<T>` extension methods
- Added `OmnifactotumImmutableArrayExtensions` (extension methods for `ImmutableArray<T>`):
 - `AvoidDefault(this ImmutableArray<T>)` extension method
- `OmnifactotumCollectionExtensions`
 - For .NET Standard 2.1+ and .NET 5+:
   - Added `ConfigureAwaitNoCapturedContext<T>(this IAsyncEnumerable<T>)`
   - Added `ConfigureAwaitNoCapturedContext<T>(this ConfiguredCancelableAsyncEnumerable<T>)`
   - Added `EnumerateToListAsync<T>(this IAsyncEnumerable<T>, CancellationToken)`
   - Added `EnumerateToArrayAsync<T>(this IAsyncEnumerable<T>, CancellationToken)`
- `OmnifactotumDisposableExtensions`
 - For .NET Standard 2.1+ and .NET 5+:
   - Added `ConfigureAwaitNoCapturedContext(this IAsyncDisposable)`

#### Minor updates and fixes

- `OmnifactotumCollectionExtensions`: Fixed/improved annotations on `ToUIString()` methods
- Fixed/improved NRT related annotations on:
 - `OmnifactotumGenericObjectExtensions`:
   - `EnsureNotNull()`
 - `OmnifactotumOperationContextExtensions`:
   - `GetAllClientCertificates()`
 - `OmnifactotumUriExtensions`:
   - `EnsureWebUri()`
   - `EnsureAbsoluteUri()`
 - `NUnitFactotum`
   - `AssertNotNull()`
- `OmnifactotumCollectionExtensions`: Improved `AvoidNull()`: Now considering `ImmutableArray<T>.IsDefault` to avoid accessing an uninitialized instance
- Applied `ConfigureAwaitNoCapturedContext` (that is, `ConfigureAwait(false)`) in:
 - `EventHandlerAsyncExtensions`:
   - `InvokeAsync<TEventArgs>(...)` extension method
   - `InvokeParallelAsync<TEventArgs>(...)` extension method
 - `OmnifactotumCollectionExtensions`:
   - `DoForEachAsync<T>()` extension methods
 - `OmnifactotumTaskExtensions`:
   - `AwaitAllAsync(this IEnumerable<Task>)`
   - `AwaitAllAsync<TResult>(this IEnumerable<Task<TResult>>)`
 - `SemaphoreSlimBasedLock`
   - `AcquireAsync(CancellationToken)`
- Minor code improvements
- Minor XML documentation improvements

### Changes in 0.10.0 (since 0.9.0)

#### New features

- Added the `CaseInsensitiveStringKey` structure
- `OmnifactotumDateTimeExtensions`: Added the `AsKind(this DateTime, DateTimeKind)` extension method

### Changes in 0.9.0 (since 0.8.0)

#### Breaking Changes

- `ByReferenceEqualityComparer<T>` class: Enforced the `class` constraint on `T`
- `DirectedGraphNode<T>`: Removed the parameterless constructor overload and applied the corresponding default value in the remaining constructor
- `EnumFixedSizeDictionaryDeterminant<TKey>`: The `Size` property became `protected` as per inheritance (used to be `public`)
- `EnumFixedSizeDictionary<TKey, TValue, TDeterminant>`: The constructor previously accepting `IDictionary<TKey, TValue>` now accepts `IEnumerable<KeyValuePair<TKey, TValue>>` (as per inheritance)
- `FixedSizeDictionary<TKey, TValue, TDeterminant>` and `EnumFixedSizeDictionary<TKey, TValue>` now implement `IReadOnlyDictionary<TKey, TValue>`
- `Factotum.ProcessRecursively<T>()` method: Removed overloads not having the `RecursiveProcessingContext<T>` parameter and applied the default value for this parameter in the other overloads
- `FixedSizeDictionaryDeterminant<TKey>`: The `Size` property became `protected` (used to be `public`)
- `FixedSizeDictionary<TKey, TValue, TDeterminant>`: The constructor previously accepting `IDictionary<TKey, TValue>` now accepts `IEnumerable<KeyValuePair<TKey, TValue>>`
- `KeyedEqualityComparer<T, TKey>`: Removed the constructor without the key comparer parameter and applied the default value to the key comparer parameter in the remaining constructor
- `OmnifactotumDateTimeExtensions`: Added the `valueExpression` parameter to the `EnsureKind()`, `EnsureUtc()`, and `EnsureLocal()` methods
 - For .NET 5+ and higher, the `valueExpression` parameter is marked with `CallerArgumentExpression`
 - For older .NET versions, the `valueExpression` parameter is supplied only for binary compatibility between the different target frameworks
- `OmnifactotumEnumExtensions`: Made methods generic and enforced the `Enum` constraint on:
 - `GetName()`
 - `GetQualifiedName()`
 - `GetFullName()`
 - `IsDefined()`
 - `EnsureDefined()`
 - `CreateEnumValueNotImplementedException()`
 - `CreateEnumValueNotSupportedException()`
- `OmnifactotumEnumExtensions`: Added the `enumerationValueExpression` parameter to the `EnsureDefined<TEnum>()` method
 - For .NET 5+ and higher, the `enumerationValueExpression` parameter is marked with `CallerArgumentExpression`
 - For older .NET versions, the `enumerationValueExpression` parameter is supplied only for binary compatibility between the different target frameworks
- `OmnifactotumGenericObjectExtensions`: Removed the `ToPropertyString<T>()` methods
- `OmnifactotumGenericObjectExtensions`: Added the `valueExpression` parameter to the `EnsureNotNull<T>()` methods
 - For .NET 5+ and higher, the `valueExpression` parameter is marked with `CallerArgumentExpression`
 - For older .NET versions, the `valueExpression` parameter is supplied only for binary compatibility between the different target frameworks
- `OmnifactotumUriExtensions`: Added the `valueExpression` parameter to the `EnsureAbsoluteUri()` and `EnsureWebUri()` methods
 - For .NET 5+ and higher, the `valueExpression` parameter is marked with `CallerArgumentExpression`
   - For older .NET versions, the `valueExpression` parameter is supplied only for binary compatibility between the different target frameworks
- `RecursiveProcessingContext<T>` class: Removed the parameterless constructor and applied the default value for the parameter in the parameterized constructor
- `SyncValueContainer<T>`: Removed parameterless constructor
- **Validation** types: Marked Validation attributes non-CLS compliant (as per compiler warnings)
 - `BaseValidatableMemberAttribute`
 - `ValidatableMemberAttribute`
 - `BaseMemberConstraintAttribute`
 - `MemberConstraintAttribute`
 - `MemberItemConstraintAttribute`
- `ValueContainer<T>`: Removed parameterless constructor
-`VirtualTreeNode.Create<T>` method: Added optional parameter `IReadOnlyCollection<VirtualTreeNode<T>>? children`
- `VirtualTreeNode<T>`: Replaced all constructors with single `VirtualTreeNode(T value, IReadOnlyCollection<VirtualTreeNode<T>>? children = null)`
- `VirtualTreeNodeBase<T>`: Redesigned constructors and made the remaining constructor non visible outside assembly (`private protected`)
- `VirtualTreeNodeRoot<T>`: Replaced all constructors with single `VirtualTreeNodeRoot(IReadOnlyCollection<VirtualTreeNode<T>>? children = null)`
- `WeakReferenceBasedCache<TKey, TValue>`
 - Applied the `notnull` constraint on the `TKey` type parameter
 - Removed the constructor overload without the `IEqualityComparer<TKey>? keyEqualityComparer` parameter and applied the corresponding default value in the remaining constructor

#### New features

- Added support of **.NET 6**
- Enabled **Nullable Reference Types** for all the types across the entire project (except `Omnifactotum.Annotations.*`)
- `ComparableObjectBase`: Implemented `IComparable`
- `OmnifactotumCollectionExtensions`: Added the `Chunk<TSource>(this IEnumerable<TSource> source, int size)` extension method to use with .NET versions prior to 6.0
- Added `OmnifactotumNullableEnumExtensions`:
 - `CreateEnumValueNotImplementedException<TEnum>()`
 - `CreateEnumValueNotSupportedException<TEnum>()`
- `OmnifactotumStringExtensions`:
 - Added the `TrimPostfix()` method
 - Added the `TrimPrefix()` method
- Added `VirtualTreeNodeRoot` static helper class
- **Validation**:
 - Added `EnumValueDefinedConstraint<TEnum>` constraint
 - Added `NullableEnumValueDefinedConstraint<TEnum>` constraint

#### Minor updates and fixes

- Applied `AggressiveInlining` (or `AggressiveInlining` and `AggressiveOptimization`), where appropriate, in:
 - `ComparableObjectBase`
 - `DirectedGraphNode`
 - `EquatableObjectBase`
 - `KeyedEqualityComparer`
 - `OmnifactotumDateTimeExtensions`
 - `OmnifactotumDisposableExtensions`
 - `OmnifactotumEnumExtensions`
 - `OmnifactotumHashCodeHelper`
 - `OmnifactotumMathExtensions`
 - `OmnifactotumMethodBaseExtensions`
 - `OmnifactotumNullableBooleanExtensions`
 - `OmnifactotumOperationContextExtensions`
 - `OmnifactotumSetExtensions`
 - `OmnifactotumTypeExtensions`
 - `OmnifactotumUriExtensions`
 - `ValueRange`
 - `ValueRange<T>`
- Improved annotations in:
 - `ComparableValueCapsule<T>`
 - `EnumFactotum`
 - `EquatableValueCapsule<T>`
 - `Factotum`
 - `OmnifactotumArrayExtensions`
 - `OmnifactotumDictionaryExtensions`
 - `OmnifactotumEnumExtensions`
 - `OmnifactotumExpressionExtensions`
 - `OmnifactotumHashCodeHelper`
 - `OmnifactotumMathExtensions`
 - `OmnifactotumMethodBaseExtensions`
 - `OmnifactotumNullableBooleanExtensions`
 - `OmnifactotumOperationContextExtensions`
 - `OmnifactotumTypeExtensions`
 - `ReadOnlySet<T>`
 - `ValueRange`
 - `ValueRange<T>`
- Minor optimizations in
 - `Factotum.SetDefaultValues<T>()`
 - `OmnifactotumAssemblyExtensions.GetLocalPath()`

---

### Changes in 0.8.0 (since 0.7.0)

#### New features

- Added `TemplatedStringResolver` (a templated string is defined in a way similar to C# interpolated string)

---

### Changes in 0.7.0 (since 0.6.0)

#### Breaking Changes

- **Removed** support of **.NET Framework 4.0**
- `OmnifactotumGenericObjectExtensions`: Removed the `Morph()` methods (null propagation can be used instead)
- Removed the `AsyncFactotum` class in favor of `async`/`await`
- The `OmnifactotumCollectionExtensions.DoForEachAsync()` overloads now accept `CancellationToken` and pass it to `actionAsync`

#### Deprecations

- `Factotum.CreateEmptyCompletedTask()` (use `Task.CompletedTask`)
- `Factotum.CreateEmptyFaultedTask()` (use `Task.FromException(Exception)`)

#### New features

- Extension Methods
 - `OmnifactotumNullableTimeSpanExtensions`:
   - Added the `ToFixedString()` method
   - Added the `ToFixedStringWithMilliseconds()` method
   - Added the `ToPreciseFixedString()` method
 - `OmnifactotumTimeSpanExtensions`:
   - Added the `ToFixedString()` method
   - Added the `ToFixedStringWithMilliseconds()` method
   - Added the `ToPreciseFixedString()` method
 - `OmnifactotumUriExtensions`:
   - Added the `EnsureAbsoluteUri()` method
   - Added the `EnsureWebUri()` method
- Internally added `System.Diagnostics.CodeAnalysis.NotNullIfNotNullAttribute` and `System.Diagnostics.CodeAnalysis.NotNullWhenAttribute` to make these attributes available when targeting older frameworks (prior to .NET Standard 2.1 and .NET 5.0). Affected methods:
 - `OmnifactotumGenericObjectExtensions`
   - `EnsureNotNull<T>()`
 - `OmnifactotumSecureStringExtensions`
   - `IsNullOrEmpty()`
   - `ToPlainText()`
 - `OmnifactotumStringExtensions`
   - `IsNullOrEmpty()`
   - `IsNullOrWhiteSpace()`
   - `IsWebUri`
   - `ToSecureString()`
 - `OmnifactotumUriExtensions`
   - `EnsureAbsoluteUri()`
   - `EnsureWebUri()`
   - `IsWebUri`

#### Minor updates and fixes

- `OmnifactotumGenericObjectExtensions`:
 - Fixed nullability annotations on the `ToPropertyString()` methods
 - Fixed documentation on the `EnsureNotNull()` method
- `OmnifactotumSecureStringExtensions`: Fixed `ContractAnnotation` on the `IsNullOrEmpty()` method
- `OmnifactotumStringExtensions`: Fixed `ContractAnnotation` on the `IsNullOrEmpty()` and `IsNullOrWhiteSpace()` methods
- Applied missing `InstantHandle` annotation on `ObjectValidationResult.GetException(...)`
- Improvements in `OmnifactotumDictionaryExtensions`:
 - Using Nullable Reference Types (where applicable)
 - Applied `AggressiveInlining` (where applicable)

---

### Changes in 0.6.0 (since 0.5.0)

#### Breaking Changes

- `OmnifactotumArrayExtensions`
 - `Initialize<T>()` overloads now return the passed array instead of `void`
- Enforced the `Enum` constraint on the applicable generic types and methods
 - `EnumFactotum` methods:
   - `GetValue<TEnum>()`
   - `GetValue<TEnum>()`
   - `GetAllValues<TEnum>()`
   - `GetAllFlagValues<TEnum>()`
 - `EnumFixedSizeDictionary<TKey, TValue>` class
 - `EnumFixedSizeDictionaryDeterminant<TKey>` class
 - `OmnifactotumEnumExtensions` methods:
   - `IsAllSet<TEnum>()`
   - `IsAnySet<TEnum>()`
   - `IsOneOf<TEnum>()`

#### Deprecations

- Object validation
 - Deprecated `NotNullOrWhiteSpaceStringConstraint` in favor of the newly
   added `NotBlankStringConstraint`

#### New features

- Types
 - Added delegate `Task EventHandlerAsync<>(...)` (excluding .NET Framework 4.0)
 - Added `OutFunc<...>` delegates (similar to `System.Func<>`, but having an `out` parameter of the type `TOutput`)
   - `OutFunc<TOutput, out TResult>`
   - `OutFunc<in T, TOutput, out TResult>`
   - `OutFunc<in T1, in T2, TOutput, out TResult>`
   - `OutFunc<in T1, in T2, in T3, TOutput, out TResult>`
 - Added `SemaphoreSlimBasedLock`
 - Object validation:
   - Added `NotBlankStringConstraint`
   - Added `NotNullOrEmptyCollectionConstraint`
   - Added `NotNullOrEmptyCollectionConstraint<T>`
   - Added `WebUrlConstraint`
- Extension Methods
 - Added `EventHandlerAsyncExtensions` (extension methods for `EventHandlerAsync<>`) (excluding .NET Framework 4.0)
 - `OmnifactotumArrayExtensions`
   - Using Nullable Reference Types (where applicable)
   - Added `Initialize<T>(T[], T)` (initializing with a specific constant value)
 - Updated `OmnifactotumCollectionExtensions`
   - Added `DoForEachAsync`
   - Using Nullable Reference Types for all the methods (where applicable). Particularly:
     - `GetFastCount`
     - `CollectionsEquivalent`
     - `CollectionsEqual`
     - `FindDuplicates`
     - `DisposeCollectionItemsSafely`
     - `AvoidNull`
     - `ToHashSet`
     - `ToUIString`
 - Updated `OmnifactotumDateTimeExtensions`
   - Added `EnsureKind()`, `EnsureUtc()`, and `EnsureLocal()` methods
   - Added `ToFixedStringWithMilliseconds()` method
   - Exposed `FixedStringFormat`, `FixedStringWithMillisecondsFormat`, and `PreciseFixedStringFormat` fields
 - Updated `OmnifactotumDateTimeOffsetExtensions`
   - Added `ToFixedStringWithMilliseconds()` method
   - Exposed `FixedStringFormat`, `FixedStringWithMillisecondsFormat`, and `PreciseFixedStringFormat` fields
 - Added `OmnifactotumDelegateExtensions` (extension methods for delegates) with method:
   - `GetTypedInvocations()`
 - Added `OmnifactotumEqualityComparerExtensions` (extension methods for `IEqualityComparer<T>`) with method:
   - `GetHashCodeSafely(this IEqualityComparer<T>, ...)`
 - Updated `OmnifactotumGenericObjectExtensions`:
   - Added `GetObjectReferenceDescription()`
   - Added `GetShortObjectReferenceDescription()`
   - Added `AsNullable<T>` (`where T : struct`)
   - Applied `NotNullIfNotNull` annotation on `EnsureNotNull()` (.NET Standard 2.1+ and .NET 5.0+ only)
   - Using Nullable Reference Types (where applicable). Particularly:
     - `ToStringSafely()`
     - `ToStringSafelyInvariant()`
     - `GetHashCodeSafely()`
     - `GetTypeSafely()`
     - `ToUIString()`
     - `ToPropertyString()`
     - `IsEqualByContentsTo()`
     - `Morph()`
 - Added `OmnifactotumHttpStatusCodeExtensions` with method:
   - `ToUIString(HttpStatusCode)`
 - Added `OmnifactotumNullableDateTimeExtensions` with methods:
   - `ToFixedString()`
   - `ToFixedStringWithMilliseconds()`
   - `ToPreciseFixedString()`
 - Added `OmnifactotumNullableDateTimeOffsetExtensions` with methods:
   - `ToFixedString()`
   - `ToFixedStringWithMilliseconds()`
   - `ToPreciseFixedString()`
 - Added `OmnifactotumTaskExtensions` with methods (excluding .NET Framework 4.0):
   - `AwaitAllAsync(IEnumerable<Task>)`
   - `AwaitAllAsync(IEnumerable<Task<TResult>>)`
   - `ConfigureAwaitNoCapturedContext(Task)`
   - `ConfigureAwaitNoCapturedContext(Task<TResult>)`
 - Added `OmnifactotumValueTaskExtensions` with methods (excluding .NET Framework 4.0):
   - `ConfigureAwaitNoCapturedContext(ValueTask)`
   - `ConfigureAwaitNoCapturedContext(ValueTask<TResult>)`

#### Minor Updates

- `OmnifactotumArrayExtensions`: Minor optimization in `AvoidNull()`
- `OmnifactotumGenericObjectExtensions`
 - `ToStringSafely()` and `ToStringSafelyInvariant()` now never return `null` and instead fall back to `string.Empty`
- `OmnifactotumStringExtensions`: Fixed annotation in `ToUIString()`
- Applied `MethodImplOptions.AggressiveInlining` (and, when possible, `MethodImplOptions.AggressiveOptimization`) to the methods, where reasonable. Affected classes:
 - `OmnifactotumGenericObjectExtensions`
 - `OmnifactotumCollectionExtensions`

---

### Changes in 0.5.0 (since 0.4.1)

#### Breaking Changes

- `ReadOnlySet` class:
 - `IsReadOnly` property now implements `ICollection<T>.IsReadOnly` **explicitly**
- `IValueContainer<T>` moved from the namespace `Omnifactotum` to `Omnifactotum.Abstractions`

#### New features

- Added `ICurrentDateTimeProvider`, `CurrentDateTimeProviderExtensions`, and `LocalComputerCurrentDateTimeProvider`
- Added `IElapsedTimeProvider`, `ElapsedTimeProviderExtensions`, and `StopwatchElapsedTimeProvider`
- The `ReadOnlySet` class now implements `IReadOnlySet` (.NET 5+)
- Added new extension methods for `System.String`:
 - `IsWebUri(string)`
 - `ToSecureString(string)`
 - `WithoutTrailingSlash(string)`
 - `WithSingleTrailingSlash(string)`
- Added new extension methods for `System.Uri`:
 - `IsWebUri(Uri)`
 - `ToUIString(Uri)`
 - `WithoutTrailingSlash(Uri)`
 - `WithSingleTrailingSlash(Uri)`
- Added new extension methods for `System.Security.SecureString`:
 - `IsNullOrEmpty(SecureString)`
 - `ToPlainText(SecureString)`
- Added `ContractAnnotation` to `OmnifactotumGenericObjectExtensions.EnsureNotNull`
- Improvements in the `OmnifactotumStringExtensions` class:
 - Using Nullable Reference Types (where applicable)
 - Added the `ContractAnnotation` annotations (where applicable)
 - Added the `AggressiveInlining` flag (where applicable)
 - Improved parameter annotations (using `NotNullWhen`, `ItemCanBeNull` etc. where applicable)
 - Other minor improvements

#### Minor Updates

- Polished the XML documentation
- Minor optimizations in the `Factotum` class:
 - Applied `MethodImplOptions.AggressiveInlining` where applicable
 - Forwarding `CreateEmptyCompletedTask()` to `Task.CompletedTask` (except for NET 4.0)
 - Forwarding `CreateEmptyFaultedTask(Exception)` to `Task.FromException(Exception)` (except for NET 4.0)

---

### Changes in 0.4.1 (since 0.4.0)

- Added the `Factotum.For<TObject>.Identity` method (same as `Factotum.Identity<T>`)
- Added `Factotum.For<TObject>.IdentityMethod` (the cached reference to the `Factotum.For<TObject>.Identity` method)
- Using the `Deterministic` build option
- Using Portable PDBs
- Using `snupkg` format of the symbol package

---

### Changes in 0.4.0 (since 0.3.0.119)

#### Major Updates

- `Omnifactotum` is now the multi-target package for:
 - .NET Framework 4.0, 4.6.1, and 4.7.2
 - .NET Standard 2.0 and 2.1
 - .NET 5.0
- Addressed multi-target compatibility issues in:
 - `ColoredConsoleTraceListener`
 - `OmnifactotumAssemblyExtensions`
 - `OmnifactotumCollectionExtensions`
 - `OmnifactotumDictionaryExtensions`
 - `OmnifactotumOperationContextExtensions`
 - `KeyValuePair` (static helper)
 - Omnifactotum's `ReadOnlyDictionary<TKey, TValue>`
 - `WinEventLog`
- Added `OmnifactotumKeyValuePair` static helper for facilitating migration from .NET Framework to .NET Standard/Core

#### Breaking Changes

- `Factotum`: Removed the methods `ToPropertyString` and `AreEqualByContents` in favor of methods `ToPropertyString` and `IsEqualByContentsTo` in `OmnifactotumGenericObjectExtensions`
- `OmnifactotumArrayExtensions`: The method `AsReadOnly()` moved to `OmnifactotumCollectionExtensions`
- `OmnifactotumCustomAttributeProviderExtensions`: Removed the obsolete method `GetCustomAttributes`
- `OmnifactotumGenericObjectExtensions`: Removed the methods `Affirm` and `ComputePredicate`
- `OmnifactotumMathExtensions`: Removed the methods `Sqr(decimal)`, `SqrChecked(float)`, `SqrChecked(double)` since their expected behavior cannot be achieved

#### New features

- `OmnifactotumCollectionExtensions`: Added `ToUIString` implementation for collections of strings and collections of nullable value type instances
- `OmnifactotumGenericObjectExtensions`: Implemented `Morph()` overloads for nullable value types (to complement already existing method for the reference types)
- `OmnifactotumNullableBooleanExtensions`: Added an overload of `ToString` accepting value provider delegates
- Added `ReadOnlyItemCollection<T>` (read-only wrapper for `ICollection<T>`)
- Added partial support of Nullable Reference Types:
 - `OmnifactotumGenericObjectExtensions.EnsureNotNull`
- Exposed the class `OmnifactotumRepresentationConstants` (formerly `OmnifactotumConstants`)
- Applied `PureAttribute`, `InstantHandleAttribute`, and `NoEnumerationAttribute` annotations in certain appropriate cases

#### Fixes and improvements

- Improved documentation
- `KeyedEqualityComparer<T, TKey>`: `IEqualityComparer.Equals` and `IEqualityComparer.GetHashCode` now don't throw an exception f an argument is not compatible with the type `T`
- `OmnifactotumAssemblyExtensions`
- `OmnifactotumCollectionHashCodeHelper` (as per the fix in `OmnifactotumHashCodeHelper`)
- `OmnifactotumDateTimeOffsetExtensions`
- `OmnifactotumEnumExtensions`: `GetName`, `GetQualifiedName`, `GetFullName`, `EnsureDefined`, and `IsDefined`
- `OmnifactotumGenericObjectExtensions`:
 - `ToUIString()` now uses the invariant culture if the value is `IFormattable`
 - Fix in `IsEqualByContentsTo()` for the case of a type with no fields
- `OmnifactotumHashCodeHelper`: Fix in CombineHashCodeValues (for case when the next hash code is zero)
- `OmnifactotumMethodBaseExtensions`
- `OmnifactotumTypeExtensions`
- Updated JetBrains Annotations in `Omnifactotum.Annotations`

---

### Changes in 0.3.0.119 (since 0.3.0.117)
- Omnifactotum: Removed NuGet dependency to the `MSBuildTasks` package since it is only used for development

---

### Changes in 0.3.0.117 (since 0.3.0.114)
- Omnifactotum: `Factotum` and `Factotum.For<TObject>`: Improved annotations

---

### Changes in 0.3.0.114 (since 0.3.0.101)
- `OmnifactotumAssemblyExtensions`: Improvements
- **BREAKING CHANGE**: `OmnifactotumDisposableExtensions`: `DisposeSafely` now works only for reference and nullable types (2 overloads)
- **BREAKING CHANGE**: `OmnifactotumCollectionExtensions`: `DisposeCollectionItemsSafely` now works only for reference and nullable types (2 overloads)
- **BREAKING CHANGE**: `Factotum`: `DisposeAndNull` now works also for nullable types (besides reference types)
- Introduced the `AsyncFactotum` class with the overloaded methods `ComputeAsync` and `ExecuteAsync`
- Fix in `MemberConstraintBase.CastTo<T>` (and hence in `TypedMemberConstraintBase`) for nullable types
- Improved annotations in Object Validator and related classes
- Minor improvements

---

### Changes in 0.3.0.101 (since 0.3.0.90)
- `KeyedEqualityComparer<T, TKey>`: Fixes and improvements
- `KeyedEqualityComparer` static helper class has been introduced
- `Factotum`: `CreateEmptyCompletedTask` and `CreateEmptyFaultedTask` methods have been introduced
- `OmnifactotumGenericObjectExtensions`: `EnsureNotNull` (for nullable) has been introduced
- `IValueContainer<T>` has been introduced for `ValueContainer<T>` and `SyncValueContainer<T>`
- `ValueContainer` and `SyncValueContainer` helper static classes have been introduced
- Improvements and fixes in `OmnifactotumMethodBaseExtensions` and `OmnifactotumTypeExtensions`
- `OmnifactotumStringExtensions`: `TrimSafely`, `TrimStartSafely`, `TrimEndSafely` and `Shorten` methods now never return null

---

### Changes in 0.3.0.90 (since 0.3.0.86)
- **BREAKING CHANGE** `OmnifactotumCustomAttributeProviderExtensions`: `GetCustomAttributes` has been renamed to `GetCustomAttributeArray` (for compatibility with FW 4.5+)

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### Changes in 0.3.0.86 (since 0.3.0.83)
- **BREAKING CHANGE** `OmnifactotumDictionaryExtensions`: The method `GetValueOrCreate` has been renamed to `GetOrCreateValue` for readability and in order to avoid confusion with `GetValueOrDefault`
- `OmnifactotumDictionaryExtensions`: Improved annotations
- `ValueContainer` and `SyncValueContainer`:
   - Support for equality comparison
   - Added `DebuggerDisplay` attribute and `ToString()` method
- `OmnifactotumMathExtensions` class has been introduced:
   - `Sqr` (square)
   - `Sqrt` (square root)
   - `Abs` (absolute value)

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### Changes in 0.3.0.83 (since 0.3.0.82)
- `FixedSizeDictionary`: Improved annotations
- `FixedSizeDictionary`: Implemented version verification in the enumerator

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### Changes in 0.3.0.82 (since 0.3.0.80)
- `FixedSizeDictionary`: Removed index verification in the internal determinant since this verification highly affected performance

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### Changes in 0.3.0.80 (since 0.3.0.79)
- `EnumFixedSizeDictionary`: Fix in determining the size

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### Changes in 0.3.0.79 (since 0.3.0.74)
- `FixedSizeDictionary` and `EnumFixedSizeDictionary` have been introduced.
- Applied Omnifactotum Annotations to the `Factotum` and `OmnifactotumGenericObjectExtensions` classes.

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### Changes in 0.3.0.74 (since 0.2.0.59)
- **BREAKING CHANGE** Object Validation: Redesign and support of `IEnumerable`.
- **BREAKING CHANGE** Renamed `EnumHelper` to `EnumFactotum`.
- **BREAKING CHANGE** `OmnifactotumExpressionExtensions` is now in the namespace `System.Linq.Expressions` (instead of System).