SadConsole 6.4.7

This package has no dependencies.

- Added new Palette and Timer classes.
     - Added extension method to ColorGradient that returns a Color[] based on the stops.
     - Fixed a bug in InputBox that happened when you clicked twice on the control. Thanks arxae and naknode!
     - Fixed effect manager remove methods.
     - Fixed mouse processing other consoles after it was found over the top-most
     - Created a LayeredSurface.Load single param overload to block accidentally calling BasicSurface.Load
     - MouseHandler for a Console has changed. If it assigned, the normal mouse processing logic will no longer run.
     - Fixed rendering problem with consoles created after initialization. (thanks kingvitamin103)
     ## 6.4.5
     - Added SadConsole.GameHelpers.Directions class and helpers.
     - SurfaceEditor now supports basic shape functions. Easier to draw shapes than previous model. (Line only supported for now, more to come)
     - Lines can be auto connected through static SurfaceEditor.ConnectLines method.
     - Promoted a bunch of private members for the Window class to protected.
     - Window title row can be positioned by the class now. Use the protected titleLocationY variable.
     - ListBox.HideBorder instantly redraws instead of waiting for a `IsDirty` flag.
     ## 6.4.6
     - Fixed logic for TabStop with ControlsConsole. It was stopping a focused control from being tabbed off of, not stopping a control from being tabbed to.
     - Keyboard input was reversing '[' with '{' and ']' with '}'
     - Controls now refresh when you change the theme with Control.Theme = variable.
     ## 6.4.7
     - Fixed keyboard problem with selection button.
     - Font class now has a link back to the FontMaster instance.
     - Added SadConsole.Settings.GraphicsProfile for monogame hidef vs reach.
     - Added a Mouse.Clear to clear state (like keyboard has)
     - Game has a OnDestroy callback now for when the game starts to shut down.
     - VirtualCursor bugs fixed. Also supports print effects again.
     - DrawString instruction uses a VirtualCursor all the time (.Cursor property) to fix issues with printing. (thanks vga256)
     - VirtualCursor uses the solid square character as default now instead of underscore.
     - FontMaster caches Font objects created with GetFont. The same instance is passed around now instead of a new one.
     - Fade effect has UseCellDestinationReverse to reverse the logic of the of using the back/fore cell color.