Increase version and clean changelog
Refactor around completion list creation
Create CEThemeManager class
Add theme menu to main menu
Add default key

Conflicts:
	CotEditor/Sources/constants.h
Create CETheme class
Rename cursorColor to insertionPointColor
Use binary format for theme plist
Add copy keyword to properties whose type has also mutable version
Fix themeManager
Improve CETheme class
Use theme setting for coloring
Add theme menu to main menu
Draw page guide programmically
Redraw also selected line on theme changing
Theme editor (WIP)
Theme editor 2