Merge pull request #16 from katyukha/fix-topic-group

[FIX] Fix display of subcommands grouped by topic.

Merge pull request #15 from katyukha/dev-unparsed-args

Save unparsed (rest) args on result

Undo basicExceptionCtors (GDC FE version too low)

Merge pull request #2 from mostvexingparse/fix_version_flag

Fix the handling of the --version flag. Fixes #1

Version 0.1