Merge pull request #6 from matthieu-foucault/feature/cloc-per-file

Feature/cloc per file
Merge pull request #7 from matthieu-foucault/feature/source-options

Feature/source options
fix bugs in ClocByFile and use --by-file option of cloc
Merge branch 'master' into feature/clone-progress
better clone progress information
Merge branch 'feature/cloc-per-file' into dev
Merge branch 'feature/clone-progress' into dev
added SourcesOptionsUtil mixin
use SourcesOptionsUtil mixin in ClocPerFileAnalysis