Add support for Conditionals and Comparisons '==, !='

[kenjones-cisco]

Add support for Conditionals and Comparisons '==, !='

The expression ‘a == b’ will produce ‘true’ if the result of a and b are equal (that is, if they represent equivalent JSON documents) and ‘false’ otherwise. In particular, strings are never considered equal to numbers. If you’re coming from Javascript, jq’s == is like Javascript’s === - considering values equal only when they have the same type as well as the same value.

!= is “not equal”, and ‘a != b’ returns the opposite value of ‘a == b’

[mikefarah]

Support for '==' is there, but not '!=' (although this can be done by using not.

[mikefarah]

Actually '!=' is there too.