Maven, huge refactor, interface changes

Among other things, these interface changes allow for supporting pre-UUID Minecraft versions again. I may eventually backport older versions, but I don't know that I'll be able to lay hands on old enough jars.
Removed static access
Renamed all methods to follow conventions

README.MD

@@ -0,0 +1,26 @@
+## Goals
+This fork of OpenInv was created when the lag caused by offline player lookups post-UUID migration became too much to bear. Overall, it does not differ much from the original.
+
+### Changes of Note
+- Removed updater
+- Removed wand
+
+## Previous Versions
+Any version of Minecraft this fork has been existent for should have a [release](https://github.com/Jikoo/OpenInv/releases) tagged. Features are not backported, however.
+
+## License
+```
+Copyright (C) 2011-2014 lishid.  All rights reserved.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation,  version 3.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+```