Changes to `either` and `dictionary`

[jamesrswift]

• Dictionaries now take a strict context parameter (defaulting to false) to check in all fields in given dictionary are present in the schema and vis versa (previously, it only checked if all the schema entries were present in the given dictionary)
• The either schema generator function now takes a parameter strict (defaulting to true) to set the strict context parameter on its children. This is a breaking change that fixes the bug you've brought up
• Dictionaries previously blinded stored the result of the validation of child fields without checking, which is why you sometimes ended up with none. This is quite a big breaking change the package previously guaranteed that fields defined in schema would have keys defined in validated objects (even if that value was none). I think doing it this way is better, but its still a big change so I won't merge until everyone has a good chance to test it out first.

[tingerrr]

Why was this merged if the tests fail?

EDIT: I notice now that it's not a test for dictionary or either, but the question remains for whatever caused this.

[jamesrswift]

I think I was using the tests as a playground and forgot to fix (mb). Went in to fix (78a36ad7035cf2ad17758968fb7fdd1e4def216a and d138971629f1a3a8a6e80297898a68777abad4d9), and in so doing also fixed an unintended regression with ctx.remove-optional-none which now works correctly once again.