set MPLCONFIGDIR to tempfile.mkdtemp() cause /tmp dir to fill up

[ytidhar]

the code
os.environ['MPLCONFIGDIR'] = tempfile.mkdtemp() #So that matplotlib doesnot complain stale file handle
https://github.com/rhshah/iCallSV/blob/a22782a7fadd79e030df35fa39a954021d4b29e5/iCallSV/filterAnnotatedSV.py#L30
is bad because it cause matplot lib to create new tmp dir on every import!!!

[rhshah]

Hello @ytidhar thank you for using the codebase, at the time of implementation, that was the best option, as we would create default temporary directory to be not /tmp but directory with enough space. I have not explored for better implementations, if you have suggestions, I am open to hearing them.

[ytidhar]

Hi
when we try to use this fix we discover that matplotlib is use the config dir to write some cache files as fontList.cache file and tex.cache/ dir, as this are cache files it didnt deleted so its make sense to use fix path as /home/local/tmp/[user]/.config/matplotlib/ for it