Miscellaneous cleanup to Xor #276
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- Removes `Xor#filter`, as the dependency on a `Monoid[A]` is ad-hoc - Adds `orElse`, `valueOr`, and `ensure` methods to `Xor` - Adds `Xor.fromOption` - Miscellaneous ScalaDoc - Miscellaneous formatting cleanup Note: this should be merged after typelevel#272
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ceedubs
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Nov 7, 2015
I think this was leftover from copy/paste from `Xor`. It mentions that it's useful when using `Validated` in for-comprehensions, but you can't actually use `Validated` in for-comprehensions since it doesn't have a `flatMap` method :). Also, `Xor` no longer has a `filter` method. It was removed in typelevel#276 since using the monoid zero when the predicate doesn't match is rather arbitrary and can lead to surprises. I think we should follow that precedent for `Validated`.
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Xor#filter, as the dependency on aMonoid[A]is ad-hocorElse,valueOr, andensuremethods toXorXor.fromOption