Update 1.3.0

• Added entity registry (By @halotroop2288)
• Added mirrors of register recipe functions (By @halotroop2288)
• Updated gradle plugin configuration (By @halotroop2288)
• Properly load classpath mods into FoxLoader
• Updated Fabric Mixin from 0.13.4+mixin.0.8.5 to 0.15.0+mixin.0.8.7
• Updated Mixins Squared from 0.1.2-beta.6 to 0.2.0-beta.6
• Updated Mixins Extras from 0.3.6 to 0.4.0
• Updated FastUtil from 8.5.13 to 8.5.14