Clean up CHANGES. Missing links. Pretty

All, I did some more cleanup on the changelog. 

I did a few spellchecks and fixed a fourletter word in "function".
changed 6 instances of "more then" to "more than"
Fixed a few missing bug numbers that weren't linked.
Cleaned up some code and double-lines.
Removed some instances of \[...\] (You'll see why)
Used some syntax highlighting.

I didn't run it against a spell checker, but thought you might like to see the results. Is there any rule against fixing typos in a changelog?