Add sbt-fmpp plugin and its settings
Use the fork of sbt-fmpp temporarily
Modify "/hs_err_pid*.log" in .gitignore to "hs_err_pid*.log"
Add "/*/project/*" to .gitignore
Add saare.FunctionOps
Add saare.ShortOps, IntOps, LongOps
Refine saare.unsafe
Add an initial implementation of xxHash32