Adds version for maven source plugin to parent pom. Fixes some pom expressions
Fixes javadoc warnings in API
Fixes javadoc warnings in Database
Removes commented-out getAndTagRecurring methods
Fixes javadoc and generics warnings in memorydb
Removes supressed warnings and cleans up some unnecessary casts in Mongo package
Fixes some generics warnings in examples
Fixes deprecation warnings and unchecked cast warnings