release change to 2.3.0-SNAPSHOT
prepare for integral data types with explicit length limitation and implicit fractional digits (fixed point arith)
introduce new data type BigInteger
add additional plausi for JPA
WIP
change signature of readObject as well
TESTS GREEN AGAIN
JAXB XmlAdapters for integers with implicit scaling
bugfix serialized data in persistence layer
fix to not require public meta directive
tag to 2.3.0