Soupsieve

- **FIX**: Add missing `s` flag to attribute selector for forced case sensitivity of attribute values.
- **FIX**: Relax attribute pattern matching to allow non-essential whitespace.
- **FIX**: Attribute selector flags themselves are not case sensitive.
- **FIX**: `type` attribute in HTML is handled special. While all other attributes values are case sensitive, `type` in HTML is usually treated special and is insensitive. In XML, this is not the case.

- **FIX**: Fix namespace check for `:nth-of-type`.

- **NEW**: Deprecate `commentsiter` and `selectiter` in favor of `icomments` and `iselect`. Expect removal in version 1.0.

- **NEW**: Initial prerelease.