TODO

Make the first line of doc text for messages include the message name

Create the "registry" so it can be proposed to IALA

AIS messages for environmental response
  A way to report equipment deployment

Add filtering to serial logger... e.g. only log AIVDM or some other
start string.  Suggested by A. Maitland Bottoms.

See if I can make a serial logger using the python logging module and
filters to do exactly what serial-logger does including both the logging
to a file and forwarding to TCP.

Eventually want to put everything under a noaadata namespace, right?

Get almost all code (other than opt parse) out of the scripts directory
and into better engineered/reusable modules.

Refactor to get all ais related stuff under the ais namespace:  comments?
Maybe stuff under utils should be just in ais?

  ais
   |- compiler1
   |- compiler2 (rewrite the current compiler)
   |- c_compiler
   |- util
   |- db (break the database stuff down somewhat)
   |- msgs ... itu m 1..64  (all binary messages are in a subdirectory by defining athority)
       |- ris
       |- sls
       |- pawss (probably just alias to sls)
       |- rtcm (prototype messages_
       |- uscg? or do I do this by the dac?  dac366

Make a bbox for each station calculator.

ais_build_sqlite3 appears broken

cBitVector for speed