Consider removing versioneer?

[yuvipanda]

I've had nothing but trouble with it when installing repo2docker from master or from a specific branch. For example, if you do:

pip install git+https://github.com/yuvipanda/repo2docker@julia-requirements

It thinks the version is jupyter-repo2docker-0.2.0+1064.ga3b7e95 which isn't true, and causes lots of other failures in other projects that depend on jupyter-repo2docker>0.7. There's also no easy way for me to debug this.

What value do we get from this somewhat large piece of code? Can we just use manual versioning instead?

[betatim]

Let's see if we can debug this. The advantages of using it:

• releasing requires creating a tag on the git CLI and pushing it
• if you are running a branch/master repo2docker --version will report the precise revision you are using (handy for debugging)
• i've never had to look at the code of versioneer, it seems to just work

cons:

• it is a huge amount of code
• none of us can debug it (realistically)
• sometimes versioneer breaks