v0.9.0

• 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