Merge pull request #43 from brave/speedreader-0.8.4

Speedreader 0.8.4

Merge pull request #42 from brave/html5ever-0.25.1

Downgrade the html5ever dep to 0.25.1

Kuchikiki v0.8.2

New release from the Brave Browser maintainers, renamed to `kuchikiki`.
It should be semver-compatible with the old `kuchiki` crate.

This includes accumulated fixes from the former upstream since 0.8.1.

Modify the elements to be readability friendly

Adds two new fields: `score` and `is_candidate`. By including these in
the element data, we can avoid the need to maintain complicated data
structures for keeping track of candidate score when performing the
readability algorithm.

Update kuchiki version

Update to 0.8.0.

Update to cssparser 0.24 and selectors 0.20

Change Attributes to a BTreeMap

v0.6.0 (breaking update of public dependency html5ever)