0.0.9

CHANGES:

0.0.9

• Introduce Message Selectors – selectors are functions from Message.t down
  to a specific subset of messages your process is currently interested in.
  Messages that aren't selected will be kept in the queue in place. This allows
  us to implement patterns where we scan the mailbox for specific messages,
  while allowing new messages to come in and not be accidentally discarded.

• Several nix-flake improvements – thanks to @metame 👏

• Introduce a new run_with_status function that converts a Result into an
  exit status, and helps one-off programs be written more succintly – thanks
  @Dev380 ✨

• Add File.exists to the Riot lib

• Fix TLS dependency to 0.17.3