Bump ApspectJ version to 1.7.3 so it doesn't crash OBA when run with a Java 1.7 VM.
Fix #19 again.
Merge pull request #76 from Hillsborough-Transit-Authority/issue19

Fix #19 again - NPE in Maven
Merge pull request #63 from bdferris/master

Bump ApspectJ version to 1.7.3 so it doesn't crash OBA when run with with a Java 1.7 VM