Updating to 1.15.2 and build simplification#518

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paulolc wants to merge 4 commits intoalecgorge:masterfrom paulolc:master

+557-1,210

Commits on Apr 29, 2020

Updating to 1.14.x

mizpablito
authored and
paulolc
committed
Updating to 1.15.x
paulolc
committed

Commits on May 3, 2020

Build simplified. Now "mvn install" builds everything, including spigot if necessary
paulolc
committed

Commits on May 5, 2020

Reintroduced getNetworkManagers in NettyInjector
paulolc
committed