fixup! Allowing search by known airport.
fixup! Allowing search by known airport.

Drop redundant parenthesis because 'or' has less precenence than 'is'
[1].  Since folks should know the precedence (it's also easy to look
up), the parenthesis are an unneeded distraction.  See also, [2].

[1]: https://docs.python.org/3/reference/expressions.html#operator-precedence
[2]: https://github.com/swcarpentry/amy/pull/117#issuecomment-68571590

pbanaszkiewicz/amy,wking/swc-amy,vahtras/amy,vahtras/amy,pbanaszkiewicz/amy,pbanaszkiewicz/amy,swcarpentry/amy,swcarpentry/amy,wking/swc-amy,wking/swc-amy,shapiromatron/amy,shapiromatron/amy,wking/swc-amy,vahtras/amy,swcarpentry/amy,shapiromatron/amy