Do not mention issue number in the title of PR

The issue number should not be mentioned in the title of the PR. Here is an example of a PR where title has the issue number.

17 Added billing feature

PR title is not the place to mention which issue this PR is fixing. The place for that is in the body of the PR.

A better PR title would be following.

Added billing feature

In the body of the PR one could add following info.

fixes #17