pom.xml: updates for release 0.19.13
pom.xml: updates for release 0.19.13

Entitlement/subscription refactoring and incremental perf improvements
New implementation pass to allow a mix of RO and RW calls

Signed-off-by: Kill Bill core team <1a73af9e7ae00182733b2292511b814be66f065f@killbill.io>

killbill/killbill,killbill/killbill,sbrossie/killbill,killbill/killbill,sbrossie/killbill,sbrossie/killbill,sbrossie/killbill,killbill/killbill,killbill/killbill,sbrossie/killbill