* Renamed the 'PyPAD.Update::dateTime()' method to
'PyPAD.Update::dateTimeString()'.
* Changed the format of the 'dateTime' field in the PAD JSON structure
from RFC822 to ISO 8601.
* Added a 'startDateTime' field to the 'now' and 'next' objects in
the PAD JSON structure.
* Added a PAD Type enumeration for use in 'PyPAD.Update'.
* Added 'PyPAD.Update::hasPadType()' and 'PyPAD.Update.startDateTime()'
methods.
* Removed 'PyPAD.Update::hasNowPad()' and 'PyPAD.Update:hasNextPad()'
methods.
* Added support for '%d(<dt>)' and '%D(<dt>)' wildcards in
'PyPAD.Update::padFields()'.
* Changed the Python namespace of the PyPAD classes from
'rivendell.PyPAD' to 'PyPAD'.
* Renamed the 'PyPAD.PyPADReceiver' class to 'PyPAD.Receiver'.
* Renamed the 'PyPAD.PyPADUpdate' class to 'PyPAD.Update'.
* Added a 'port' argument to the 'PyPAD.Receiver::start()' method.
* Added an 'escaping' argument to the 'PyPAD.Update::padFields()'
method.
* Added support for the 'Encoding=' directive to the 'pypad_udp.py'
script.
