Merge pull request #1022 from FranciscoBorges/master

revert clebert's debug commit
2.3.0.Final release
revert to 2.3.0.SNAPSHOT
Merge pull request #1023 from andytaylor/master

release PR
fixing URL
Merge pull request #1026 from clebertsuconic/master

fixing URL on the docs
Add check for CWD, so that script fails with a decent error msg
(following complaint from Claus Ibsen)