Bump version to 1.2.4

Bump version to 1.2.3

Release commit for v1.2.2.

Release commit for v1.2.1.

Updated to v1.1.3

Bump to v1.1.1

Bump to v1.1

Merge pull request #14 from incuna/refactor-extensions

Migrate extensions to inherit from Extension class.

Bump to version 0.4.

Merge pull request #8 from incuna/0.3

Upgrade to feincms 1.7