Rebuild only TypeScript projects when the compiler settings are changed.
Merge pull request #29 from barakka/compiler_rebuild

Rebuild only TypeScript projects when the compiler settings are changed.
Merge remote-tracking branch 'upstream/master'
Marking compiler outputs as derived resources.
Merge pull request #30 from barakka/derived

Marking compiler outputs as derived resources.
Merge remote-tracking branch 'upstream/master'