1.1.0: Export, import and delete all fragments features (#1)

* Implement Json import and export

* Implement Delete, tune icons

* Implement tests for FragmentManager

* Add extra credits, changelog, and fix button order

* Minor README fixes

* Bump version

* Minor fixes

1.0.0

Bump version number

0.0.3

Add icon credit, adjust changelog

0.0.2

Add badge