Enable `field:` syntax in queries.
Switch to Search::Query::Parser.

Requires Search::Query::Dialect::KSx as well.

It offers some more interesting features, including wildcard searches, which I
hope to put to use shortly.
Test = as well as :.
Test wildcards.
Comment.
Create searcher for every search.

Keep the query parsers persistent, though. They don't need to change unless
the schema changes, and the schema won't chagne without a restart anyway.
Rename `path` to `doc_root` and document it.

The new name brings it in line with the same accessor on PGXN::API.
Make sure uri and email are stroed.

Searchable *and* visible.
Increment to v0.8.0.
Timestamp v0.8.0
Spelling.
Increment to v0.8.1.
Increment version to 0.9.0.
Switch back to KinoSearch::Search::QueryParser.
It's v0.9.0.
Use the parsed query for the highlighter.
Update s/doc/docpath/ field name change in PGXN::API v0.12.0.
Timestamp v0.9.0.
Doc tweaks.
Increment to v0.9.1.