Update changelog.

Signed-off-by: crynobone <crynobone@gmail.com>
Update title.

Signed-off-by: crynobone <crynobone@gmail.com>
duplicate contributing to 2.0

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.0' into 2.1
Update changelog.

Signed-off-by: crynobone <crynobone@gmail.com>
Update changelog.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1'