Don't end changes feed listener on heartbeat

There's no need to end and restart the changes feed listener on every
heartbeat, so don't do that.

COUCHDB-3054
1 file changed
tree: ad9536500dfc2a1609e4476f494ba575302341ef
  1. include/
  2. priv/
  3. src/
  4. test/
  5. .travis.yml
  6. LICENSE