prepare release 0.12.2 (#1082)

Author: mfeurer

doc/progress.rst

@@ -13,6 +13,10 @@ Changelog
 * ADD #1075: A docker image is now automatically built on a push to develop. It can be used to build docs or run tests in an isolated environment.
 * ADD: You can now avoid downloading 'qualities' meta-data when downloading a task with the ``download_qualities`` parameter of ``openml.tasks.get_task[s]`` functions.
 * DOC: Fixes a few broken links in the documentation.
+* DOC #1061: Improve examples to always show a warning when they switch to the test server.
+* DOC #1067: Improve documentation on the scikit-learn extension interface.
+* DOC #1068: Create dedicated extensions page.
+* FIX #1075: Correctly convert `y` to a pandas series when downloading sparse data.
 * MAINT: Rename `master` brach to ` main` branch.
 * MAINT/DOC: Automatically check for broken external links when building the documentation.
 * MAINT/DOC: Fail documentation building on warnings. This will make the documentation building

openml/__version__.py

@@ -3,4 +3,4 @@
 # License: BSD 3-Clause
 
 # The following line *must* be the last in the module, exactly as formatted:
-__version__ = "0.12.1"
+__version__ = "0.12.2"