Refactor code to say newCommits

[johnjacobkenny]

I did not edit the changelog since I was unsure whether it is recommended to change an existing changelog.

[edgardmessias]

I will fix it on refactor

[edgardmessias]

@JohnstonCode , wait first for https://github.com/JohnstonCode/svn-scm/tree/rework

[codecov]

Codecov Report

Merging #142 into master will increase coverage by 1.65%.
The diff coverage is 68.42%.

@@            Coverage Diff            @@
##           master    #142      +/-   ##
=========================================
+ Coverage   37.25%   38.9%   +1.65%     
=========================================
  Files          20      18       -2     
  Lines        1914    1676     -238     
  Branches      316     275      -41     
=========================================
- Hits          713     652      -61     
+ Misses       1193    1017     -176     
+ Partials        8       7       -1

Impacted Files	Coverage Δ
src/svnRepository.ts	66.28% <100%> (+13.74%)	⬆️
src/statusBar.ts	81.48% <66.66%> (-6.02%)	⬇️
src/repository.ts	60% <66.66%> (-0.48%)	⬇️
src/decorators.ts	69.81% <0%> (-18.87%)	⬇️
src/svn.ts	61.84% <0%> (-11.21%)	⬇️
src/decorationProvider.ts	19.35% <0%> (-4.12%)	⬇️
src/util.ts	58.69% <0%> (-2.71%)	⬇️
src/extension.ts	0% <0%> (ø)	⬆️
... and 6 more

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[JohnstonCode]

@johnjacobkenny

I'll be merging your PR later today. I have started tagging issue as good first issues if you would like to contribute further.