Changes since last release

Support for insert text mode.
Text cursor will now show directional hints for bidi text.
Added cut/copy/paste context menu for text components.
Balloons tooltips are now enabled by default for buttons.
Improved html style sheet.
On Windows (Vista and later) darklaf will now use the system font.
On macOS Catalina the default font will now be Helvetica Neue due to kerning issues with the San Francisco font.
Better interoperability with custom cell renderers.
Improved selection painting.
- Added property to control whether the selection is extended to the end of the text component.
```
textComp.putClientProperty(DarkTextUI.KEY_EXTEND_LINE_SELECTION, enabled);
```
Performance improvements.
New scrollbar appearance on macOS that resembles the system appearance more closely.
Improved slider thumb appearance.

Added rounded button variant.

button.putClientProperty(DarkButtonUI.KEY_ROUND, true);

Added warning variant for text components.

textComp.putClientProperty(DarkTextUI.KEY_HAS_WARNING, true);

Disabled tables/trees/lists don't paint the cells disabled. dcf86461ae
Non standard cares shift text when at the end of the document. 5bcda602f6
Visuals of other tex components may be visible outside of border. aaa3a0849e
TableHeader doesn't scroll along when TableModel is set after creating the table. #163 d727dbcfa3
Table doesn't use the Object.class renderer when set. #164 1e1f02f241
Layout of QuickColorChooser has undesirable resize behaviour. #165 673eb77172
Incorrect popup location when using multiple monitors with different resolutions. #162 59e3c8e5f0
Poor performance when using bidirectional text with non zero margins. #167 252885df6f
Text isn't painted when using the toggle button slider variant. 0d1f2913dd
Kerning issues on macOS Catalina. #128 d3fd5dedab
Icons loose opaque parts after changing the theme.