StandardizeNotEqualFixer - new fixer
feature #376 StandardizeNotEqualFixer - new fixer. (keradus)

This PR was merged into the 0.5.x-dev branch.

Discussion
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StandardizeNotEqualFixer - new fixer.

Standardize T_IS_NOT_EQUAL token (!= and <>) to use only != form.

Commits
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a91d8fb StandardizeNotEqualFixer - new fixer