v0.7.0 - Better server core building and many APIs support!

Building server core

Using build tools instead of dowloading core from Yive's mirror.
Now you should specify path to BuildTools in build script:

bukkit {
    buildtools = '/path/to/BuildTools.jar'
}

Also added tasks:
:buildServerCore - Build server core only if it not contains in local maven repo
:rebuildServerCore - Force rebuild server core

Support of others APIs

BREAKING CHANGES!

Now you should manually add api dependencies.
Possible APIs:

dependencies {
    compileOnly spigot()
    compileOnly spigotApi()
    compileOnly bukkit()
    compileOnly craftbukkit()
}