* Remove unused image processing code
* Add opencv back-compat comment
* Add tests for parser special cases
* Fix lattice table area test
* Add tests for output format
* Add openpyxl dep
* Add unknown flavor test
* Add input kwargs test
* Remove unused utils
* Add unsupported format test
* Add stream unequal tables-columns length test
* Add python3 compat
* Add no tables found test
* Convert util info log to warning