fix --no-color / --color option for `mix test`
Merge pull request #2668 from reset/fix-nocolor

fix --no-color / --color option for `mix test`
Minor unquote/1 doc fix.
Merge pull request #2674 from koudelka/unquote-doc-fix

Minor unquote/1 doc fix.
Use GenServer when possible
Improve error message for undefined struct
Output mix version on 'mix -v'
Ensure load_tasks return no duplicates
Add --force option to 'mix local.rebar'