Allow accessing version variables after initialization (#58)

* Allow accessing version variables after initialization

This commit does two things:

1. Version variables are accessable by users after
   package initialization.

   Users can now use my_package.VERSION over exporting
   my_package.version, then accessing the version value,
   which makes things much easier.

2. Adapt changes made to version values to other parts
   of the project

   Version variables were renamed to the following:

        VERSION_SHORT ==> VERSION
        VERSION       ==> RELEASE

    and parts referring to version values were changed
    accordingly, so nothing's broken.

Signed-off-by: TheRealKeto <[email protected]>

* Revert renaming versioning variables

This commit reverts the change made to version
variables, renaming them back to their original
naming

    VERSION_SHORT <== VERSION
    VERSION       <== RELEASE

Signed-off-by: TheRealKeto <[email protected]>

* Correctly use version variable in setup script

Signed-off-by: TheRealKeto <[email protected]>

Author: TheRealKeto

docs/source/conf.py

@@ -18,7 +18,7 @@
 
 sys.path.insert(0, os.path.abspath("../../"))
 
-from my_package.version import VERSION, VERSION_SHORT  # noqa: E402
+from my_package import VERSION, VERSION_SHORT  # noqa: E402
 
 # -- Project information -----------------------------------------------------
 

my_package/__init__.py

@@ -0,0 +1 @@
+from .version import VERSION, VERSION_SHORT