Update to 1.8.4.
Also:
- Mark the LICENSE.txt with the license macro.
- Spice up the Source0 URL so it puts the name in the source
tarball.
- Use a correct project URL.
- Provide a python2-pyramid package.
- Provide the correct executable names for the python2- and
python3- subpackages.
- Leave old python3- executables for the time being, even though
they are not the correct names.
- Sort dependencies lexigraphically.
Signed-off-by: Randy Barlow <randy@electronsweatshop.com>