Release v2.9.0

Merge pull request oetiker#293 from oetiker/fix-missing

prepere for 2.8.2 release

Merge pull request oetiker#292 from oetiker/fix-findbin

fix missing FindBin issue and release 2.8.1

Merge pull request oetiker#289 from oetiker/2.8.0

2.8.0

release 2.7.3

release 2.7.2

update release script

release 2.7.0

updated changes

getting ready for 2.6.10