add rhombic polihedra

[mfrasca]

more options for calendars

addresses own issue #1020

adds square-of-two rhombic icosahedron (type 1) and golden rhombic icosahedron (makes a nice flat lying calendar).

Checklist

I'm very happy to contribute my changes/enhancements under the following terms:

• Code changes are licensed under GPLv2 + LPPLv1.3c
• Documentation changes are licensed under FDLv1.2
• Add an example in the manual.

[hmenke]

Sorry for the long wait. Can you please add an example to the manual? Then I will merge it.

[mfrasca]

"Commit is not signed off by the committer"
what do I need to do?

[hmenke]

Your PR was opened before I decided to require a Developer Certificate of Origin, but if you feel like doing it please read https://developercertificate.org/ and then after rebasing and squashing your commits, add --signoff to add the Signed-off-by: message.

$ git fetch https://github.com/pgf-tikz/pgf master
$ git rebase origin/master
$ git reset --soft origin/master 
$ git commit --signoff -m "folding: add dodecahedron rhombic and golden"
$ git push -f

[mfrasca]

Your PR was opened before I decided to require a Developer Certificate of Origin […]

$ git fetch https://github.com/pgf-tikz/pgf master
$ git rebase origin/master
$ git reset --soft origin/master 
$ git commit --signoff -m "folding: add dodecahedron rhombic and golden"
$ git push -f

I'm not sure … doesn't this assume I may write on your upstream? my remotes are:

mario@rune:~/Local/github/mfrasca/pgf$ git remote -v
origin	git@github.com:mfrasca/pgf.git (fetch)
origin	git@github.com:mfrasca/pgf.git (push)

[hmenke]

Nevermind, it's fine as it is. Merged.