Merge pull request #4 from qur2/master

Remove caching
SKNS-4978 - added audience
Merge pull request #5 from blarsson/master

SKNS-4978 - add audience field to document model.
Bump version to 0.1.1
Merge pull request #6 from qur2/master

Add id field to stat model
Bump version to 0.1.2
Merge pull request #7 from qur2/master

Add format and search sources to search module.