Argparsing: problems with the -o, --output flag

[vrmiguel]

Relevant branch

• ouch file.tar.gz -o new-folder

  • Expected: create new-folder if it doesn't exist and decompress the files in there
  • What currently happens: ouch ignores the flag and saves to pwd

• ouch file.tar.gz --output new-folder

  • Expected: ouch src.tar.lzma --output new-src
  • What currently happens: [ERROR] cannot compress to 'new-src', likely because it has an unsupported (or missing) extension.

[marcospb19]

I'm debugging -o failing, is a problem with oof's argparsing.
When using --output argparsing works, just like -o will when we fix it, so we need to debug that too.

Probably occurs inside of Evaluator::compress_files, when calling other functions.

[marcospb19]

Apparently I forgot to fix that TODO.

Now making the -o fix PR.

[vrmiguel]

Solved by #14 and #16