Add compatiblity test for all 8.2 features

[eerxuan]

Expression operators (153 total)

First pass (118 total)

• Add compatibility test for arithmetic expression operators (17 total) #9
• Add compatibility test for string expression operators (21 total) #10
• Add compatiblity test for array expression operators (16 total) #11
• Add compatiblity test for date expression operators (22 total) #12
• Add compatiblity test for comparison expression operators (7 total) #13
• Add compatibility test for accumulator expression operators (7 total) #14
• Add compatibility test for type expression operators (8 total) #15
• Add compatibility test for set expression operators (6 total) #16
• Add compatibility test for remaining boolean, conditional, object, misc expression operators (14 total) #17

Second pass

• Add compatiblity test for trigonometry expression operators (15 total) #18
• Add compatibilty test for remaining second pass expression operators (20 total) #19