Make cairosvg import optional, better error handling for signature generation.
1.1.1
Fixed a bug where some images would not compute signature correctly
1.1.0
- Elasticsearch 5 query compatibility - can now specify wait for write acknowledgement on `add_image`. - can check for duplicate record paths before adding
1.0.2
Fixed a bug related to python3 conversion
1.0.1
All orientations was throwing an exception since the python3 compatibility change. Now fixed.
1.0.0
Now Python3-compatible! Thanks saru95 for your contribution.