* preparations for v2.5.1: set correct copyright date, fix missing comments on userguide.tex
* sets the version for CHANGELOG
* comment in order to check the comments/headers beforehand
* omits .codespellrc in final release tarball
* fixes wrong paths for upload, investigation of failed push
* Make TikZ library use babel to not break with French
Rendering was incorrect when using French babel: `\usepackage[french]{babel}` (and probably other languages). This can be fixed by configuring TikZ to use babel too.
Fix#219
* Configure TikZ to use babel wherever it is used
* Update CHANGELOG