Extract file to buffer

[Zoynels]

Is your feature request related to a problem? Please describe.
I need to get file from archive and work with it in memory. Now first I should extract file into temporary folder and then read extracted file. So there are two io: first write to disk, second read from disk uncompressed file.

Describe the solution you'd like
Some way to extract file into io.BytesIO() without write/read temporary file to disk.

Describe alternatives you've considered
Or archive could be extracted into dict of io.BytesIO(), where keys are filepath and values are io.BytesIO()

Additional context
None

[miurahr]

Thank you for PR! I've put a change request for that.

[miurahr]

Merged.