discussion: pip installable StaSh

[o-murphy]

As we know, some maintainers are not happy with idea of pypi distibutable and pip installable StaSh. However, it can be side by side with existing installation methods.

The proposal is:

• pypi distributed package will not be self-initialisable on pip install, but have to keep all neccesary files and initial script to setup environment (it can be runned from Pythonista console or sollutions like pipTerminal)
• Other way is pypi package should contain just getStash-like script that can be also runned from Pythonista console / pipTerminal
• pypi distributed versions should contain/install only the stable version from original repo
• pypi distributed versions have contain selfupdate tool to allow updates to other branch on need