Use Duration const constructor where possible (#316)

1 file changed
tree: 3e1be72342366fa2a2be2c5e0c23832ec7cf6a76
  1. lib/
  2. test/
  3. LICENSE
  4. README.md
README.md

This is a dummy commit generated when extracting clock from Quiver.

See https://github.com/google/quiver-dart for the original history of this code.