add a precompile workload

[KristofferC]

I came across this package and thought it was kind of slow to use so I added a small precompile workload to speed it up:

# Before:
# 1.8: 2.83s
# 1.9: 2.63s

# After:
# 1.8: 2.18s
# 1.9: 0.48s

It feels like this should be even better though.