hocr-lines outputs byte strings in python3

[kba]

E.g. ./hocr-lines test/testdata/sample.html

b'1 Down the Rabbit-Hole'
b'Alice was beginning to get very tired of sitting by her sister on the bank,'
b'and of having nothing to do: once or twice she had peeped into the book her'
b'sister was reading, but it had no pictures or conversations in it, `and what is'
b"the use of a book,' thought Alice `without pictures or conversation?"

[zuphilip]

Ah, I see. Also the test should be better to catch this case, see #84 (comment) .

@kba Are you working on this?

[kba]

Yes.

[zuphilip]

This is fixed by #87.