Merge pull request pywinauto#840 from vasily-v-ryabov/prepare_0_6_8

Finish release notes for 0.6.8

Merge pull request pywinauto#767 from vasily-v-ryabov/prepare_0_6_7

Add release notes for 0.6.7 and bump version

Merge pull request pywinauto#681 from vasily-v-ryabov/prepare_0_6_6

Update change log for 0.6.6, update Readme.txt

Merge pull request pywinauto#526 from vasily-v-ryabov/fix_set_focus

Fix set_focus() for UIA backend

Merge pull request pywinauto#457 from vasily-v-ryabov/release_0.6.4

Prepare release 0.6.4

Merge pull request pywinauto#383 from vasily-v-ryabov/UIA

Final preparations for 0.6.3

Merge pull request pywinauto#320 from vasily-v-ryabov/UIA

Add MS Paint example (fix pywinauto#310).

Merge pull request pywinauto#304 from MagazinnikIvan/fix_alt_test

fix keyboard alt test failure

Minor update in setup.py.

Update README.md.