[TxMt] Latex Watch 1.4

Here's another snapshot, for those who are interested.

I've made it into its own bundle for the moment, for ease of installation.

This version should have more robust error handling, and does its best to work with the 3.6.x versions of GV. (Unfortunately they're all pretty buggy — the best version is still 3.5.8 — but it does its best.)

Many thanks to Zettt, who went out of his way yesterday to help me identify the problems he was having.

PDF support will come in a later version, which I'll probably call 2.0. (You might like to mentally prepend "0." to all these version numbers. This is clearly still alpha code.)

Robin