Better template syntax

[cowboyd]

Sadly, % is a special YAML character for registering tags, and that means that you have to put quotes around every single string that uses them in first position.

(person)=>: "%($person.first) %($person.last)"

This destroys one of the most useful features of YAML, which is that making strings is really easy. Instead, we should choose a template syntax that lets us drop the quotes. Here are a couple of suggestions.

(person)=>: << $person.first> << $person.last>
(person)=>: (= $person.first) (= $person.last)
(person)=>: (% $person.first) (% $person.last)