Prepare for the next 3.2.x development iteration.
fixes #194 Incorrect parse result when a variable precedes a skipped variable.
fixes #195 foreach element outputs open and close values even when the passed collection is empty.
Fixes #259 association element fails to map results of the nested select to a primitive array property.
Fixes #273 An extra call to ResultHandler#handleResult is made for a nested result map.
ADD_MONTHS function does not exist in HSQLDB 2.2.9.