Fixed a bug where the PropertyValue equals always returned false

[eeverman]

Low impact - was not used
Fixes #327

[codecov]

Codecov Report

Merging #328 into master will increase coverage by 0.27%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #328      +/-   ##
=========================================
+ Coverage   41.53%   41.8%   +0.27%     
=========================================
  Files         118     118              
  Lines        3650    3650              
  Branches      606     606              
=========================================
+ Hits         1516    1526      +10     
+ Misses       1999    1987      -12     
- Partials      135     137       +2

Impacted Files	Coverage Δ
...ain/java/org/yarnandtail/andhow/PropertyValue.java	52.63% <100%> (+52.63%)	⬆️

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