Template variables that start with "not" are process incorrectly.

[gpit2286]

This line should probably be "not[space]" and not "not":

TinyTemplate/src/compiler.rs

Line 74 in 141836d

let (path, negated) = if rest.starts_with("not") {

Ran into issue where trying to use below template code:

{{ if notes -}} "{notes}" {{- else -}} ##f {{- endif }}