A small mod to update Mojang libraries.
This is no longer relevant as of Minecraft Launcher 1.4.6. It added version inheritance so it is no longer necessary to keep up with all the changes Mojang does to their json.
In a Minecraft modded environment, the libraries are not updated like they do in a vanilla version. This has become an issue recently as Mojang has been pushing frequent updates to Realms, causing Realms users to miss out on all the mods out there. This mod aims to automatically update the libraries to at least the versions in the official vanilla json downloaded directly from Mojang.
The updater will make sure to only update outdated libraries. For example: Default Minecraft ships with Guava 15.0, but FML requires Guava 16.0. This library, since it has a more recent version, will not be updated to 15.0.
Any updates that are applied will take effect the next time the Minecraft Launcher is opened.