Merge branch 'release/2.4.10' into develop
bump development version
Updated build.gradle for latest version of sablecc
fixed Prolog output of extended expressions and predicates (just by un-doing commenting code out - is that proper English??)
incremented version
add test machines for not and labels
add junit test cases for the NotLabel machines
add tests for expressions in unit pragmas
refactored to be compatible with Java 5.0
bump version
Merge branch 'release/2.4.12'