- build: Fix variable leak (Lauri Rooden)

Enhancements:

 - test: Use template for indent (Lauri Rooden)
 - bench: Call gc before loop (Lauri Rooden)
 - Use c8 for coverage (Lauri Rooden)
 - test: Set correct fakeNow on every timer cb (Lauri Rooden)
 - Update readme (Lauri Rooden)
 - build: Write to stdout when no output file (Lauri Rooden)