QGIS is an open source project and we appreciate contributions very much.
Before making a pull request, please make sure your code is properly formatted
by running the prepare commit script before issuing git commit.
./scripts/prepare-commit.sh
This can be automated by setting up the pre-commit hook properly.
ln -s scripts/prepare-commit.sh .git/hooks/pre-commit
This is a volunteer project, so sometimes it may take a little while to merge your pull request.
There is a guide with hints for getting your pull requests merged in the developers guide.