Refactor JAXBContext creation into its own Singleton provider, such that
the instance can be resued (eg. in the SIRI repeater).
Bump onebusaway-siri-api-v13 to 1.0.2-SNAPSHOT so we get the latest
vehicle activity extension.
Add support for multiple -filter specifications in the SIRI repeater
command-line argument handling.
1) Add support for specifying filters by shortened class: instead of
"org.onebusaway.siri.core.filter.SomeClass", just specify "SomeClass".
2) Add support for passing values to filters via string setters of the
filter bean.
Introduce filters.layovers.LayoverFilter, a SIRI filter that can
automatically detect and annotate transit vehicles that are in a layover
location for SIRI VM records.  The filter doesn't actually remove these
records, but instead annotates them with the OneBusAwayVehicleActivity
extension namespace.