Remove strip from dust.compile

Fixes #238, wherein the strip param in dust.compile would conflict with akdubya's documented optimizer overrides.

While this does fix the immediate issue, Dust still incorrectly does not strip leading whitespace.
Merge pull request #278 from smfoote/strip-strip

Remove strip from dust.compile, since it wasn't really very good anyway
GH-PR 278, revert the 1.2.1 addition of strip flag to compile method