Encoding issues when pushing a kernel

I'm running into an error when trying to push a kernel via the API (Python 3.6, kaggle API 1.5.3).

This code file works:

`print('hello world')`

This code file:

`print('ẁ')`

produces this error:

> 'charmap' codec can't decode byte 0x81 in position 9: character maps to undefined

The issue seems to be similar to #146. It is rather critical for NLP tasks, because 'weird' characters are often hardcoded in the script (e.g. the two most-upvoted public kernels in the current Jigsaw competition can't be submitted via the API because of this issue).

I also posted this question in the Kaggle forum, but haven't received an answer yet. I will cross-update any responses I'll get (either here or on Kaggle).