Add a mechanism to set option in Pyxel
Is your feature request related to a problem? Please describe.
Add a mechanism to a globally or in a controlled context some option(s).
These option(s) can be for example used to set parameters to read remote file (see #164 (closed))
Describe the solution you'd like
For example, an option could be set like this:
>>> import pyxel
>>> pyxel.set_options(file_cache='/tmp')
or in a controlled context
>>> import pyxel
>>> with pyxel.set_options(file_cache='/tmp'):
... print("Do something ...")