Branching 0.15.X to prepare the 0.15.0b1 release
Minor fixes in the docs
Fix some fun column span alignment errors.
removed unused variables and imports, add used imports where missing.
COSMIT TYPO
Stop using some deprecated interfaces.
Merge branch 'pr/3263': minor fixes from the 0.15.X branch
MAINT: restore -git version in the master branch after the last release merge
DOC: remove broken example link
MAINT removed shadowed broken test
MAINT remove deprecated code for 0.16