Merge pull request faucetsdn#2730 from anarkiwi/readme32

README 1.8.32.

Merge pull request faucetsdn#2706 from anarkiwi/readme31

Bump README.

Merge pull request faucetsdn#2690 from anarkiwi/readme30

README 1.8.30.

Merge pull request faucetsdn#2681 from anarkiwi/groupstackdis

groups silently disabled when stacking until better tested.

Merge pull request faucetsdn#2660 from anarkiwi/readme28

README 1.8.28.

Merge pull request faucetsdn#2633 from anarkiwi/readme27

Bump README version.

Merge pull request faucetsdn#2616 from gizmoguy/bumpversion

Bump version for release.

Merge pull request faucetsdn#2580 from anarkiwi/readme-v

Bump version for release.

Merge pull request faucetsdn#2565 from gizmoguy/revert-ryu-upgrade

Revert back to ryu 4.27.

Merge pull request faucetsdn#2549 from anarkiwi/master

 Some OFAs require minimum idle time so add config check.