Merge tag '1.0.13' into develop

Use not_analyzed for language field
add image fields to model
Merge pull request #59 from praekelt/feature/issue-59-add-image-models-to-avro-schema

add image models to avro schema
update repo url in setup.py
change to swa_KE in tests
fallback to correct swahili and english codes
add a note for language fallbacks
add logging when incorrect code is used
Merge pull request #60 from universalcore/feature/issue-60-change-swahili-language-code

change swahili language code from swh to swa
version bump
Merge branch 'release/1.1.0'