Git branching scheme

We follow the scheme described here, which can be summarised like this:

Three additional types of branches are used:

release: to prepare a release. Branches off of develop, do the final things, merge into master.
feature: Should be prefixed with feature/ and ideally correspond to an issue id. Branches off of develop and is integrated into develop
fix: For bug fixes

Release workflow

Make a new branch for the release (e.g. release/1.0.0)
Set all version numbers to the correct version
- DESCRIPTION file for the R package
- README.md for badge
Check that the R package is well: make check
Make a source package by running make build
If all works well, merge the branch into master, tag it with v1.0.0
Create a new release on the github release page
Copy the following installations instructions in release note (with fixed version numbers)
```
install_github("quadrama/DramaAnalysis", ref="v2.0.0") 
```
Add the PDF documentation for the R package to the release page