Merge branch 'release/0.4' into develop
Merge branch 'hotfix/0.4.1' into develop
Add assign reference support to phpctags
Merge pull request #15 from markwu/feature-add-assign-reference-support

Add assign reference support to phpctags
Bump to v0.4.2
Update ChangeLog
Merge branch 'release/0.4.2'