Merge branch 'release/0.4.0' into develop
Bump version to 0.4.1-SNAPSHOT for further development.
Add ordered-adjacent, follow-adjacent, and precede-adjacent selector combinators, refactor child to be a one-liner on top of ordered-adjacent, and add tests.
Add ordered, precede, and follow selector combinators.

With tests.
Add the find-in-text selector and tests.
Add codox support for doc generation.
Change version to 0.4.1 in project.clj
Update readme for 0.4.1
Merge branch 'release/0.4.1'