Error work

[henryiii]

This cleans up Error throwing in several cases.

• Requiring N values now throws an ArgumentMismatch if that number was not received (changes old error in some cases, finally correctly throws an error in the 0 received for 1 case)
• Options automatically lock if given an exact number of arguments when configured
• At least -N values required when N is negative (need to add test)
• Text processing moved to Error.h in many cases (parse related so far)

This also unifies the old _parse_short and _parse_long into a single function, _parse_arg, reducing a lot of redundancy.

[codecov]

Codecov Report

Merging #56 into master will increase coverage by 0.07%.
The diff coverage is 97.91%.

@@            Coverage Diff             @@
##           master      #56      +/-   ##
==========================================
+ Coverage   99.84%   99.92%   +0.07%     
==========================================
  Files           9        9              
  Lines        1311     1314       +3     
  Branches      259      253       -6     
==========================================
+ Hits         1309     1313       +4     
+ Misses          2        1       -1

Impacted Files	Coverage Δ
include/CLI/StringTools.hpp	100% <ø> (ø)	⬆️
include/CLI/Error.hpp	100% <100%> (ø)	⬆️
include/CLI/App.hpp	100% <100%> (+0.27%)	⬆️
include/CLI/Ini.hpp	100% <100%> (ø)	⬆️
include/CLI/Option.hpp	99.56% <90%> (-0.44%)	⬇️

---

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[codecov]

Codecov Report

Merging #56 into master will increase coverage by 0.15%.
The diff coverage is 100%.

@@           Coverage Diff            @@
##           master    #56      +/-   ##
========================================
+ Coverage   99.84%   100%   +0.15%     
========================================
  Files           9      9              
  Lines        1311   1280      -31     
  Branches      259    246      -13     
========================================
- Hits         1309   1280      -29     
+ Misses          2      0       -2

Impacted Files	Coverage Δ
include/CLI/StringTools.hpp	100% <ø> (ø)	⬆️
include/CLI/Ini.hpp	100% <100%> (ø)	⬆️
include/CLI/Option.hpp	100% <100%> (ø)	⬆️
include/CLI/Error.hpp	100% <100%> (ø)	⬆️
include/CLI/App.hpp	100% <100%> (+0.27%)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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