mvn-scalaxb: Increment version to 0.7.3-SNAPSHOT
mvn-scalaxb: Increment version to 0.7.3-SNAPSHOT

justjoheinz/scalaxb,Fayho/scalaxb,briantopping/scalaxb,Fayho/scalaxb,Banno/scalaxb,briantopping/scalaxb,Banno/scalaxb,justjoheinz/scalaxb,eed3si9n/scalaxb,justjoheinz/scalaxb,briantopping/scalaxb,eed3si9n/scalaxb,Banno/scalaxb,eed3si9n/scalaxb,Fayho/scalaxb