[ADD] XQUF: memory-saving updates (work in progress)
[MIN] comments revised
[MIN] Variant 2 activated
[FIX] XQuery, dates: compare as numbers
[MOD] API: Italian translation updated (grazie, Massimo)
[ADD] simplified test case to reproduce problems with DataClip data instance
[FIX] problem w/ DataClip ... all tests passed incl. XQUTS
[MOD] checkstyle.xml: removed DoubleCheckedLocking module call as this is no longer supported in Checkstyle 5.6
[MOD] distance caluclation for insert(...) + minor
[MOD] XQuery Update, GH-606: reducing memory usage by reducing #objects
Merge branch 'mem-saving-updates'
[MIN] XQuery Update, reduced memory usage: minor update. Closes #606
[FIX] XQuery, GH-605: partially fixed for static input
[ADD] Conversion module: functions for durations added; functions for
      dateTime operations renamed
[MOD] XQuery, Java binding: accepting Jav types as parameters
[MIN] Obsolete code removed, FindBugs checks.
[FIX] XQuery, timezone fix
[MIN] XQuery, minor fixes
[MIN] XQuery, fixes
[DEL] Serialization: 'template' option removed
[MIN] Minor rewritings triggered by PMD
[MIN] IntelliJ IDEA updates