mochiweb v3.0.0

Version 3.0.0 released 2022-05-09

• rebar3 is now the preferred build tool (finally)
  #241
  #243
• Minimum OTP version is now 18, which
  allows us to remove a number of backwards
  compatibility hacks while still supporting
  almost 7 years of Erlang releases.
  #239
• Crashing client processes now exit with reason
  {shutdown, Error}. This ensures processes
  linked to the connection process are also
  cleaned up. If exit normal was caught in a
  request loop callback, for example in a
  try ... catch exit:normal ... expression,
  that expression might have to be updated to
  handle the {shutdown, Error} error reason.
  #238
  #242