refacto: (#84) Refacto the sort of ByCaseInsensitiveSeparatorFreeAlphabeticalSortingStrategy

[asolovieff]

https://github.com/4sh/datamaintain/issues/84

• Refacto the sorting algorithm
• Fixed some description spelling mistakes
• Removed useless semicolon
• Fixed deprecated usage of toLowerCase()

[github-actions[bot]]

Unit Test Results

  55 files  ±0    55 suites  ±0   5m 20s :stopwatch: -55s 201 tests ±0  201 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  322 runs  ±0  322 :heavy_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit e38ebb8e. ± Comparison against base commit 6aeb0ade.

:recycle: This comment has been updated with latest results.