Bundle consul services and checks in the same transaction (#73)

* pack services and checks in the same transaction for higher consistency between services and their checks

* add consul check to changelog

Author: jeromegn

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- `corrosion consul sync` will now bundle services and checks in a single transaction (changeset) ([#73](../../pull/73))
 - (**BREAKING**) Persist subscriptions across reboots, including many reliability improvements ([#69](../../pull/69))
 - Support existing tables being added to the schema ([#64](../../pull/64))