Update devDependencies
Update Stylus dependency
Merge branch 'master' of https://github.com/krkn/kouto-swiss

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[TMP] remove flex vendors mixins tests
Aliasing all the functions & mixins

cf. #27
Aliasing color-fallback mecanism, changing global support variable name

cf. #27
Update documentation for implicit color-fallback variable renaming

cf. #27
Documentation for the global aliases for each functions & mixins
Update tests for flex mixins support

cf. #28
Refactor flex mixins

cf. #28
Update vendors mixins documentation

cf. #28
Bump 0.11.0