This is a quick follow-up to the previous build, fixing a few more small bugs and improving performance.

Change Log

Changes since 5.1 beta (build 9070):

• Fixed a few more cases where tool shortcuts and tooltips were not working after certain actions.
  
• Fixed: PNGs are now correctly saved with the “Software” tEXt metadata indicating they were created with Paint.NET.
  
• Improved performance in various parts of the rendering and effects engines: CPU usage has been reduced, which permits higher GPU utilization.

Changes since 5.1 beta (build 9066):

• Fixed: Copy/Paste has been hardened against short-term intermittent errors and should no longer show spurious error dialogs (e.g. ERROR_ACCESS_DENIED) except in legitimate cases.
  
• Fixed: Certain shortcut keys, especially for switching tools, will no longer stop functioning if a floating window (e.g., Tools) is hidden and then shown by clicking on the button at the top right of the main window.
  
• Fixed: Tooltips in the Tools window will no longer stop functioning if a floating window (e.g., Tools) is hidden and then shown by clicking on the button at the top right of the main window.
  
• Removed the “Scrolling past the edge of the image (over scroll)” checkbox from Settings. This was enabled by default, and now it is always enabled.
  
• Fixed: The installer was occasionally showing an error about an InvalidGraphConfigurationException on some systems
  
• Added a KnownColorSpace API for plugins so they can create IColorContexts and IDeviceColorContexts for the Display P3 and ProPhoto RGB color spaces

Changes since 5.1 beta (build 9064):

• Fixed: @BoltBait‘s TextFunFactory plugin was not working on Windows 10 due to the lack of support for IDWriteFontFace6 (despite what Microsoft’s documentation states)