Fix incorrect schema dict for arrays, rename Schema.schema to jsonschema_dict

[jtv8]

…for clarity, documented Schema class

Closes #10

[codecov]

Codecov Report

Merging #30 into master will increase coverage by 1.16%.
The diff coverage is 84.61%.

@@            Coverage Diff             @@
##           master      #30      +/-   ##
==========================================
+ Coverage   82.02%   83.19%   +1.16%     
==========================================
  Files          31       31              
  Lines         484      476       -8     
==========================================
- Hits          397      396       -1     
+ Misses         87       80       -7     

Flag	Coverage Δ
#unittests	83.19% <84.61%> (+1.16%)	⬆️

Impacted Files	Coverage Δ
wysdom/base_schema/SchemaNone.py	100.00% <ø> (+37.50%)	⬆️
wysdom/base_schema/SchemaType.py	90.00% <ø> (ø)
wysdom/base_schema/Schema.py	86.66% <71.42%> (+2.05%)	⬆️
wysdom/base_schema/SchemaAnything.py	83.33% <100.00%> (+8.33%)	⬆️
wysdom/base_schema/SchemaConst.py	77.77% <100.00%> (+16.23%)	⬆️
wysdom/base_schema/SchemaPrimitive.py	100.00% <100.00%> (ø)
wysdom/object_schema/SchemaAnyOf.py	55.55% <100.00%> (ø)
wysdom/object_schema/SchemaArray.py	100.00% <100.00%> (ø)
wysdom/object_schema/SchemaObject.py	100.00% <100.00%> (ø)

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