v2.3 wrap up issue

[pkra]

The final bug for v2.3 release.

• increment version numbers
• run packaging processes
• create labels and update branches
• register Bower package
• regenerate PNG images with post-processing compression (issue RFE: Use PNG post-processing compression improvement tools #44)?
• testing
• update documentation
• update download page on mathjax.org

[pkra]

changed the item regarding PNGs

[fred-wang]

Just one question here: did we register the Bower package? (Someone said so on a comment on GitHub, but I've never done that).

[dpvc]

I haven't registered it.

[pkra]

I think someone else already did that http://sindresorhus.com/bower-components/#!/search/mathjax

[fred-wang]

OK, I've updated the initial post.