Finish 2.3
Finish 2.3.1
Finish 3.0
Update download.rst

Fix title level
Uniformize quotes and replace mkdir with makedirs
Merge pull request #48 from Astalaseven/patch-1

Uniformize quotes and replace mkdir with makedirs
Update Settings.last_path on open/save
Update file type display when current editor changed
Uniformize quotes

Make all string use single quotes, expcept when there is a single quote in the string literal (PEP8)
Travis: fix installation of pyqode.cobol which is not available on pypi
Rename oci package into oci_old

Tests will now fail because the oci package does not exists anymore. The test suite is mostly about the compiler, so I will fix those tests when the new compiler api is ready.
Merge remote-tracking branch 'upstream/4.0-dev' into 4.0-dev