Links on pypi are out of date

[Stu.Axon]

I had a look at the file on pypi and info like the source repo address is out of date

on https://pypi.org/project/pycha/

These links are also broken

pycairochart

http://bettercom.de/de/pycairochart

plotr

http://solutoire.com/plotr/

plotkit

http://www.liquidx.net/plotkit/

Instructions for cloning the code, point to this non-existent repo

hg clone https://bitbucket.org/lgs/pycha

It would be good to update the the links, if these projects are still around (and if not, point to their link on archive.org)