For an actual explanation of the additions and how they work well... ... You can check the readme online which explains all the things.
A quick intro: A proof of concept vJass compiler, vJass is an extension to the Jass syntax enabling a bunch of crazy things like libraries, structs and textmacros.
Spoiler for Jasshelper 0.9.F.7:
jasshelper0.9.F.7.7z : Includes jasshelper.exe a command line utility that is supported by grimoire and that you can also use to manually compile your map.
Easiest way to setup jasshelper with grimoire is by downloading the Jass NewGen pack and then just update its jasshelper.exe to the one included in this release.
Link to Grimoire: http://www.wc3campaigns.net/showthread.php?t=86652
Download Jasshelper here
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Wc3mapoptimizer 4.7c (Vexorian)
Optimize maps, make them smaller and faster, even unopenable in World Editor if you want them to.
Here's A screen shot
Download link
How do I open 7z / rar files?
7z and rar files are compressed formats like zip, but you need special programs to open them
There's winrar. There is also 7zip which is able to open both and is completely free.
Visit http://www.7-zip.org/ for more information.
If you are unable to install new software you can visit http://www.portableapps.com for the portable version of 7zip which does not require installation.
Spoiler for wc3mapoptimizer 4.7c version history: