Issues, pull requests and comments are very welcome, subject to the usual code of conduct.
If your contribution is anything less trivial than correcting a spelling mistake or formatting, then you deserve credit - so please insert a line under the existing authors in COPYING.txt giving yourself attribution! If you don't, it's assumed you are happy for your contribution to fall under the existing license and for the git history to serve as credit. Credit can be added to COPYING.txt after-the-fact but won't be legally binding on earlier commits. Email addresses in COPYING.txt may be removed if domains expire - and you don't have to give one if you don't want to.
Use en-US for code, en-GB for comments, please.