1.3.0

CHANGES:

• Add Alcotest.triple for testing 3-tuples. (#288, @sheepduke)

• Correctly report test suite duration with millisecond precision. (#286,
  @craigfe)

• Improve pretty-printing of results to consider the terminal width, fixing
  several display issues due to line wrapping in small terminals. (#282,
  @craigfe)