fix(generator): should output deferred chunk even if empty
chore(injector): removed obsolete creation strategy
fix(injector): types getter return a Set of Type
Some follow-up tweaks from initial transformers

- Suppressed info message when compiling without using auto_injector, to eliminate unnecessary messages when compiling with Angular. Will switch to logging level fine which is not emitted by default once this moves to barback 0.12.
- Removed the @MirrorsUsed statement- ideal scenario is that mirrors are not encountered at all in which case this should not be there. Now that Angular is moving towards no mirrors, this gets in the way.
- Removed the generated injector module- I don't think this serves a purpose.
- Added explicit barback dependency.
Merge pull request #73 from blois/angular_tweaks

chore(transformer): some follow-up tweaks from initial transformers
feat(generator): Add optional flag to preserve comments

Add ability for generators to preserve doc comments when parsing source code.

Closes: #74
Merge pull request #72 from vicb/patch-1

fix(injector): types getter return a Set of Type
Merge pull request #75 from TedSander/source_code_option

feat(generator): Add optional flag to preserve comments
Merge pull request #71 from pavelgj/rm-creation-strategy

chore(injector): removed obsolete creation strategy
feat(injector): allow injecting annotated primitives
chore(pubspec): Release 0.0.34