clear content type cache before syncing

public apps are no longer also synced to tenant apps

added dependency. SHARED_APPS and TENANT_APPS no longer mandatory

updated docs, setup.py and manifest.in

migrate_schemas now only migrates the appropriate apps

updating docs to fix issue bernardopires#35

now pypi should contain every single file

pypi should work fine now

Version bump to 1.0.0 and updating CHANGES.txt

this looks like a solid version