Version 4.6: Syntax Highlight Improvements for VS 2019

New additions:

• Added Ctrl+C command to copy content in the Super Quick Info
• Added option to show members of interfaces in Super Quick Info

Changes and fixes:

• Made syntax highlight compatible to VS 2019 Preview 2
• Tweaked default syntax highlight themes
• Isolated opacity settings from colors in syntax highlight options page
• Optimized drawing of line numbers on scrollbar margin
• Compacted display of methods in Super Quick Info
• Used C# specific keyword names for special types in tooltips
• Compacted and sorted option page nodes
• Other bug fixes