PageableCollectionTests: Added an empty selection iteration test case.
QueryParams: Added convenience constructor signatures
ConvertingItemNavigator optimization

 . Prevent multiple convert calls if the result is already converted and
 cached.
 . Added unit tests.
PmAttrLocalDateAndTime: fixed validation implementation
[maven-release-plugin] prepare release v0.7.29
[maven-release-plugin] prepare for next development iteration
Merge commit 'd505e9d79122c24a9e8d48ec3'