Gregory Trubetskoy

isNonNull() should return the same number of series as it was given, with just 0 or 1s. Our current implementation ads them up and returns a single series, but it...

`foo.*.blah.*.blah` doesn't always work (see `tgres.*.receiver.workers.*`) also drop downs should distinctify the list, e.g. `tgres.*.receiver.workers.*.channel.*` should not list `fill_percent` 4 times.

It looks like Without() was incorrectly checking the length of contains. This PR also has a patch which closes #5.

Using the README example with a small change (add optional "foo") will result in the `Without()` being ignored. This is because AnySchema.Optional() calls ctx.Skip(): ```go package main import ( "fmt"...