Please see the file Contributing for details on
- how to report an issue: a Minimally Complete (and) Verifiable Example (MCVE) helps a lot;
- how to submit a pull request: post an issue first, get consensus about what and how;
- how to follow our (informal) coding style: simply do as other files do and do not invent a new style;
- how to be nice and add ChangeLog and NEWS.Rd.