This namespaces provides a reader that combines our grammar and clojure's reader to turn a string of prose text into
data clojure can then evaluate.

The reader starts by parsing the text using our grammar. This gives a first data representation from which
is computed data that clojure can evaluate.

The different syntactic elements are processed as follows:
- text -> string
- clojure call -> itself
- symbol -> itself
- tag -> clojure fn call
- verbatim block -> string containing the verbatim block's content.

Prose's grammar, turn text into data that can be turned into clojure code.