isag91

Results 2 issues of isag91

I have used the default origami models from [Dropbox](https://www.dropbox.com/sh/7tph1tzscw3cb8r/AAA9WxhqoKJu9jLfVU5GqgkFa?dl=0) to run origami.batch.detect.segment. The contours process worked fine but I got a KeyError when running origami.batch.detect.flow ``` python -m origami.batch.detect.flow ./IMG2...

When the input to the `convert_to_digits` function contains numbers separated by hyphens, only the last number will be returned. This is an issue for dates, for instance. `t2d.convert('11-08-1998')` `'1998'` `t2d.convert('1939-45')`...