Drop version.sbt

Prep for 1.0.0 release

Rename task key labels to be less likely to collide

Fixes earldouglas#189

Add docs for javaOptions and forking

Update version to 1.0.0-M5

Update version to 1.0.0-M4

Update to version 1.0.0-M3

Drop unneeded version configuration

Set version to 1.0.0-M1

Set version to 0.7.0