v1.9.1: Handle XML entities (#63)

* Enable mxj.XMLEscapeCharsDecoder(true) to properly deal with XML entities

* Remove some debugging

v1.9.0: Return null on error (#60)

* Initial WIP for null-on-empty response

* Add a test and update README

* Fix a test

* Update error format

* Update README

v1.8.0

Allow the use of any index ([*]) and dynamic ((key=val)) selectors on maps.

v1.7.0 - Read + Write parsers

Add support for different input/output data formats.

v1.6.2 - Add multi-document JSON support

Add multiJson file support (#48)

Add support for multi-document JSON files

v1.6.1 - Put empty object

Add test for putting an empty object

v1.6.0 - Search selector

Fix build workflow

v1.5.1 - Fix an issue that would sometimes stop new values being saved as expected

Merge branch 'master' of github.com:TomWright/dasel

v1.5.0 - Escape selectors

Merge pull request #38 from TomWright/escape-selectors

Escape selectors

v1.4.1: Merge pull request #36 from TomWright/issue/35

Fix an issue with dynamic selectors.