RPGMaker Trans v1.91

Huzzah! A new version, though this is strictly a bugfix version.

Bugs quashed:

1. Added an undocumented event code that some games use: Thanks to a bug report, I now know that at least one game uses an undocumented event code, E71A. I have no idea what it does, but it's existence was causing the script parser to trip up and die. In any case it's been added to my list of event codes, and the game in question now dumps an extra megabyte of text (or there abouts).
2. Converting RPGMaker Trans format 1.0 to 2.0 should now work properly: Specifically, the LMU files will not import correctly. I don't think anyone actually had a problem with this...
3. Don't dump null strings: Strings which are just a null character are now no longer dumped.