feat: Split handlers into engines and handlers.

BREAKING CHANGE

feat: Untangling net/http from Socket and Handler.

feat: Add code to repair broken sessions. (jfyne#42)

feat: Adds `live-debounce` to solo inputs and forms. (jfyne#39)

fix: There can be repeating anchors. This adds separates levels. (jfy…

…ne#34)

Refs:
 - jfyne#33

feat: Sessions are now extendable with additional info. (jfyne#32)

Refs:
 - jfyne#31

feat: Removes path based patching. Adds anchor based. (jfyne#29)

Should help with extensions which mess with the DOM.

Refs:
 - jfyne#28

chore: dependency updates.

fix: Fixes jfyne#26, writes correct JSON to the socket on internal er…

…ror (jfyne#27)

mousedown and mouseup events