Various fixes

[codereverser]

• classify transaction as REVERSAL when transaction is rejected due to mandate issues
• ignore transactions with no units for capital gains calculations
• support Franklin Templeton migration to CAMS RTA (while keeping the support for old PDF files intact). fixes Franklin Schemes not Returned #42

[codecov]

Codecov Report

Merging #43 (f6dcfe6) into main (a32f3a8) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #43      +/-   ##
==========================================
+ Coverage   97.62%   97.66%   +0.03%     
==========================================
  Files          19       19              
  Lines        1053     1069      +16     
==========================================
+ Hits         1028     1044      +16     
  Misses         25       25              

Impacted Files	Coverage Δ
casparser/analysis/gains.py	96.19% <100.00%> (+0.21%)	⬆️
casparser/cli.py	98.84% <100.00%> (+0.03%)	⬆️
casparser/process/cas_detailed.py	96.24% <100.00%> (ø)

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