* Improve _query_data function to correctly retrieve value, unit, quantifier, quantifier value and quantifier unit (Thanks to Dipsacus fullonum)
* Remove wikidata prefixes in queries and only use IRI
* In ItemEngine class will not try to load item data if the parameter search_only is set to true
* Improve fastrun's base filter by supporting the SequencePath
* Add parameter if_exists for set_label (with default value REPLACE)
* Change append to if_exists (with default value APPEND) for set_aliases
* Add parameter if_exists for set_description (with default value REPLACE)
* Change default config
* Remove CONCEPT_BASE_URI. it's now derivated from WIKIBASE_URL
* Add DEFAULT_LANGUAGE with a default value 'en'
* Remove shexer, pyshex and rdflib dependencies
* Remove all shex and rdf related functions. Please use your own
* Set default lang to None in functions parameters. If lang is set to None, use global DEFAULT_LANGUAGE
* Remove logging functions. Please use your own
* Improve unit tests
* Move from httpstat.us to httpbin.org
* Improve some tests with decimal value instead of simple integer
* Add unit testing for some
* Adapt tests with new parameters