uprev

update history

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update HISTORY.rst ready for release

change ms/s watershed for datetime parsing (pydantic#385)

* change ms/s watershed for datetime parsing

* more tests for ms, μs and ns

* fix formatting

* uprev

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adding MANIFEST.in (pydantic#358)

* adding MANIFEST.in

* uprev

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support ClassVar, (pydantic#339)

* support ClassVar, fix pydantic#184

* fix tests, update history

uprev.