Fixed - Fix issue [67](https://github.com/jsvine/pdfplumber/issues/67), in which bool-type metadata were handled incorrectly
0.5.8
Fixed - Fix issue [53](https://github.com/jsvine/pdfplumber/issues/53), in which non-decimalize-able (non_)stroking_color properties were raising errors.
0.5.7
Added - `.travis.yml`, but failing on `.to_image()`
Changed - Move from defunct `pycrypto` to `pycryptodome` - Update `pdfminer.six` to `20170720`
0.5.6
Fixed - Fix issue [41](https://github.com/jsvine/pdfplumber/issues/41), in which PDF-object-referenced cropboxes/mediaboxes weren't being fully resolved.
0.5.5
Added - Access to `__version__` from main namespace
Fixed - Fix issue 33, by checking `decode_text`'s argument type
0.5.4
Fixed - Pin `pdfminer.six` to version `20151013` (for now), fixing incompatibility