fix error with double-checked locking in checkstyle
core - reduce VirtuosoConnectionWrapper dependency on ConfigLoader
added script for updating maven artifact versions
changed version to 1.0-SNAPSHOT
renamed Utils to ODCSUtils
updated checkstyle  - detect TODOs
cleanup
checkstyle - added @TODO
CR - make URIMapping public
Engine - refactored DbOdcsContext -> DbOdcsContextTransactional
Engine - add odcs:attachedGraph links
CR - URIMappingImpl using HashMap
CR - adjusted URIMappingImpl for inheritance
updated checkstyle  - detect TODOs (reverse-merged from commit 0fbf784d75a1631b7b0e8f33e89e9349883311ed)
comments & formatting cleanup
CR - changed interface so that existing URIMapping is accepted
fixed checkstyle for javadoc
CR - set default multivalue to true
CR - cleanup
new util methods, cleanup