#773 revert breaking change of tox.cmdline not callable with no args

[gaborbernat]

[codecov]

Codecov Report

Merging #775 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #775   +/-   ##
=======================================
  Coverage   94.84%   94.84%           
=======================================
  Files          11       11           
  Lines        2406     2406           
=======================================
  Hits         2282     2282           
  Misses        124      124

Impacted Files	Coverage Δ
tox/__init__.py	95.91% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 765c977...b7c7f7c. Read the comment docs.

[gaborbernat]

@obestwalter with this I think we are RC ready

[obestwalter]

off we go then ... will merge this into master and cherry pick into our first go at a releas branch :)

[obestwalter]

FYI: added missing news fragment in master.