[ANN] Tork 19.3.0 - test with fork

Tork runs your tests as they change, in parallel:

  1. Absorbs test execution overhead into a master process.

  2. Forks to inherit overhead and run test files in parallel.

  3. Avoids running unchanged tests inside changed test files.

## Version 19.3.0 (2013-05-05)

Minor:

  * tork-engine(1) now emits `["idle"]` messages whenever all tests
    have finished running and no more tests are queued for running.

    Thanks to Jonathan Cairns for requesting this feature in GH-50:
    https://github.com/sunaku/tork/issues/50

Other:

  * add man/man0 subdir containing README and VERSION

  * README: use manpage xrefs for linking in HTML mans