Use any type of syntax for logic expressions, like SQL or JAVA

[IvanRave]

https://github.com/IvanRave/logic-tree/blob/master/README.md#different-syntax-in-programming-and-natural-languages

[Mark-Partola]

RegExp notation for negation marked as ^ is better for XOR

[Mark-Partola]

What do you think about case insensitive for logic operators? Configuration for this can be done in the Tokenizer

[IvanRave]

SQL operators must be uppercased or lowercased, but not mixed
(isUpperCased XOR isLowerCased) :)
I think it is not so important and can be skipped in first releases.