All Transformer classes should be named with Transformer as suffix
minor #914 All Transformer classes should be named with Transformer as suffix (keradus)

This PR was merged into the 2.0-dev branch.

Discussion
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All Transformer classes should be named with Transformer as suffix

To maintain consistency with Fixers and avoid problems with `use` transformer (can't call class Use (reserved word), must be UseTransformer)

Commits
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c004484 All Transformer classes should be named with Transformer as suffix