Fix facets calculations

What's Changed

• Fixing default title coming from configuration of aggregations by @vanch3d in #79
• Fixing conjunction between categories #77 by @cigolpl in #81
• speed up facets | removed unused function combination by @cigolpl in #82
• The facets should be conjunctive by default by @cigolpl in #84
• fixing facets calculations (asymetry in results) #83 by @cigolpl in #85
• speed it up by @cigolpl in #86

New Contributors

• @vanch3d made their first contribution in #79

Full Changelog: v2.1.1...v2.1.9