[gui] set wm hints for dialogs
[gui] emit set-state event when resetting state
added flag token handling
Docstring parser flag handling
added tests for flag lexing/parsing
Format string parser flag handling
GUI for flag fields
updated TODO
added new snippets to default.clisnips
Syntax highlighting for flags
Fixed format string parser's flag regexp
Removed wrong signal in PathEntry widget
Merge branch 'feature/flags' into develop