Minor release 6.1.0

* match: pass a depth argument to selector predicates (af15939)

* tests: delete unused var (f10902a)
* ci: reinstate tests in node 9 (7cd2594)
* ci: temporarily disable tests in node 9 (e27ccd0)

Major release 6.0.0

* eventify: distinguish between syntax and operational errors (e7bc23d)
* walk: distinguish between syntax and operational errors (419ddae)

* streams: expose a highWaterMark option (626f755)
* match: implement a streaming match api (e2e320d)

* docs: note the end of node-4 maintenance (0a32090)

Patch release 5.3.1

* unpipe: prohibit unpipe from setting the ndjson option (90b61c6)

Node-4 version of 5.3.1

Minor release 5.3.0

* walk: add support for NDJSON streams (e87672a)

* docs: document the pause and resume functions on event emitters (bfdf152)

* lint: silence warning (761bad4)
* package: update dev dependencies (396cc40)
* docs: link to bfj-collections (11eacb8)

Node-4 release of version 5.3.0

Patch release 5.2.1

* walk: handle stream errors sanely (9fe21ff)

* deps: update dev dependencies (c1d0518)
* ci: run tests in node 9 (222356e)
* deps: update dev dependencies (be54dbf)

Node 4 release of 5.2.1

Minor release

* fix: extra paragraph about why bfj is slow (e51ca34)
* fix: expand possible causes of the error event (8d1d352)
* feature: add a pause method to the walk emitter (a4cd0e0)

Node-4 release of 5.2.0