ISSUE_113: configurable similarities

[zouzias]

No description provided.

[codecov-io]

Codecov Report

Merging #114 into develop will increase coverage by 0.16%.
The diff coverage is 78.37%.

@@            Coverage Diff             @@
##           develop    #114      +/-   ##
==========================================
+ Coverage    75.54%   75.7%   +0.16%     
==========================================
  Files           32      33       +1     
  Lines          871     885      +14     
  Branches        82      81       -1     
==========================================
+ Hits           658     670      +12     
- Misses         213     215       +2

Impacted Files	Coverage Δ
...spark/lucenerdd/partition/LuceneRDDPartition.scala	88.73% <100%> (+0.32%)	⬆️
.../scala/org/zouzias/spark/lucenerdd/LuceneRDD.scala	85.13% <70%> (+0.41%)	⬆️
...zias/spark/lucenerdd/facets/FacetedLuceneRDD.scala	71.42% <71.42%> (+1.05%)	⬆️
...spark/lucenerdd/query/SimilarityConfigurable.scala	77.77% <77.77%> (ø)
...spark/lucenerdd/spatial/shape/ShapeLuceneRDD.scala	85.13% <83.33%> (ø)	⬆️

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