Added test revealing problem with the abs operator
Added fix for problem with generation of the abs operator (number dereference related)
Added two tests revealing problem generation of the unary plus and the unary minus expressions (number dereference related)
Fix for problem with generation of the unary plus and the unary minus expressions (number dereference related)
Updates to existing test results that use the equality and nonequality operators
Added two tests revealing problem with generation of the equals and not-equals operator for optional types
Fix for problem with generation of the equals and not-equals operator for optional types. Now the equals call is delegated to that in the codegen runtime
Updated the equals method in the Java codegen runtime to also handle number comparison
Updated the sub-sequence operator representation in the Java codegen runtime to use Number for indices in the signature
Added test to exercise seq-to-string and string-to-seq conversion
Updated the Java codegen runtime to handle seq-to-string conversion and string-to-seq conversion.
Added a transformation that can convert strings into sequences of characters and vice versa.