+6133. [cleanup] Refactor the isc_job_run() to not make any allocations
+ by embedding isc_job_t into callback argument, and
+ running it directly. As a side-effect, isc_async_run
+ and isc_job_run now executes jobs in the natural order.
+
+ Use the new improved API to execute connect, read and
+ send callbacks from netmgr in more straightforward
+ manner, speeding up the networking. [GL #3961]
+
6132. [doc] Remove a dead link in the DNSSEC guide. [GL #3967]
6131. [test] Add a minimal test-only library to allow testing