Using ABCHasStrictTraits for the Base classes and enforce traits compliancy

Created by: stefanoborini

Uses traits to enforce the base class compliancy of the related objects.

Fixes #30 (closed)

Created by: codecov-io

Codecov Report

Merging #34 into master will increase coverage by 16.36%. The diff coverage is 100%.

@@             Coverage Diff             @@
##           master      #34       +/-   ##
===========================================
+ Coverage   28.69%   45.06%   +16.36%     
===========================================
  Files          38       38               
  Lines         467      486       +19     
  Branches       29       29               
===========================================
+ Hits          134      219       +85     
+ Misses        324      258       -66     
  Partials        9        9

Impacted Files	Coverage Δ
force_bdss/kpi/base_kpi_calculator.py	94.11% <100%> (+94.11%)
force_bdss/mco/base_multi_criteria_optimizer.py	88.88% <100%> (+88.88%)
force_bdss/data_sources/base_data_source.py	94.11% <100%> (+94.11%)
force_bdss/core_evaluation_driver.py	25.92% <0%> (+25.92%)
force_bdss/core_mco_driver.py	43.75% <0%> (+43.75%)
force_bdss/bdss_application.py	46.42% <0%> (+46.42%)
force_bdss/base_core_driver.py	71.42% <0%> (+71.42%)

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