A fast and small XML processor for Clojure. With XML namespace support and secure defaults.

Reads and writes a format similar but not identical to clojure.xml and data.xml:

* Elements as maps with `:tag`, `:attrs` and `:content` keys
    - The `:tag` is represented as a
      [`javax.xml.namespace.QName`](https://docs.oracle.com/javase/8/docs/api/javax/xml/namespace/QName.html)
      to support XML namespaces.
    - `:attrs` is a map from `QName`s to strings, to support XML namespaces for the attribute names as well
    - `:content` is a seq of elements and character data
* Character data as strings
    - By default, adjacent character sections (including CDATA) are joined together to one string when reading.

There are also options and utility functions to convert QNames to keywords when reading and from keywords to QNames
when writing (`:tag-fn` and `:key-fn`, [[qname->keyword]] etc.).

CDATA blocks can also be read and written as [[CData]] records, processing instructions as [[ProcessingInstruction]]s
and comments as [[Comment]]s.