New keyword "par"

[Charles]

I have reserved the new keyword "par" for potential future language level features around parallel programming. If this breaks anyone's code and that's a problem, let me know and I'll look into the "virtual keyword" approach that C# has used for new keywords. Our community is still fairly small though and I doubt this is a popular parameter or local variable name.

Note that keywords never conflict with methods since methods must be accessed via a dot (.) or must start with an underscore. Also, keywords never interfere with user types which must be capitalized. So only parameters and locals are possibly affected.