LANG-1603: Deprecate Fraction class

[rednikeeg]

jira issue: https://issues.apache.org/jira/browse/LANG-1603

[codecov-commenter]

Codecov Report

Merging #935 (bdc72af) into master (ceb7fbb) will decrease coverage by 0.01%. The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #935      +/-   ##
============================================
- Coverage     92.01%   92.00%   -0.02%     
+ Complexity     7436     7434       -2     
============================================
  Files           189      189              
  Lines         15751    15751              
  Branches       2961     2961              
============================================
- Hits          14494    14491       -3     
- Misses          672      673       +1     
- Partials        585      587       +2     

Impacted Files	Coverage Δ
...n/java/org/apache/commons/lang3/math/Fraction.java	93.70% <ø> (ø)
...apache/commons/lang3/reflect/ConstructorUtils.java	84.00% <0.00%> (-2.00%)	:arrow_down:
...va/org/apache/commons/lang3/CharSequenceUtils.java	87.09% <0.00%> (-1.62%)	:arrow_down:

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[garydgregory]

The discussion in https://issues.apache.org/jira/browse/LANG-1603 does not make it clear (to me) if the proposed replacement is convenient enough.