Get version number w/o pkg_resources
This removes most of the usages of pkg_resources from the codebase, helping the goal of getting rid of that completely.
With this change, version number is now stored in package's top-level
__init__.py
as a global, instead of in setup.py.
Part of efforts to address #172 (closed) (and #171 (closed) probably) Together with !232 (closed) and !231 (merged), this provides a significant speed up in startup by eliminating all usages of pkg_resources for short-lived commands.
Edited by Gökçen Nurlu