Drawpile 2.1.6 release

Version 2.1.6 is now out. For Windows users, this release fixes the tablet problems that appeared in the previous 2.1.5 version.

Bugs fixed in this release:

• Fixed tablet support in the Windows build
• Fixed that the chat box would autoscroll when not scrolled to the bottom
• Fixed session settings shortcut clash with the fullscreen shortcut (F11) by removing the default shortcut for session settings
• Fixed lines being drawn across the canvas if session reset occurs while midstroke

Features and other changes:

• Added Night Mode (Windows and Linux only at the moment, support for macOS coming later)
• Session permissions can now be saved as presets
• New shortcut: Tab now hides or shows toolbars and docks
• Added an option to share the same color across all tool slots
• Session can now be reset to an image loaded from file
• Scrollbars are now hidden in fullscreen mode
• Added "pick color from layer" brush mode
• Enabled smooth canvas scaling at certain zoom levels (1-200% or 1-800% when rotated)