Wrote initial outlining of the API Implementation Guide.
Added organizational aspects.
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
Added versioning and first pattern.
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
combined queue-channel implementations, factored out queue behaviour to eliminate considerations of goroutines
WIP; RUW no longer embedded in liveSource, otherwise functional
rearrange further, add some tests
pull many many commits from master
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
Updated versioning section.
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
syslog: fixes and updates to rsyslogd and logrotate.
Adjust lograte size to prevent a mismatch.
Change rsyslogd size to be actual size instead of a naive value.
Potentially fix bug #13699000 by increasing the maximum number of TCP sessions.

Rsyslog was rejecting agents from connecting because of MaxSessions, which caused those
agents to go into spirals of trying to restart their rsyslog worker over and over,
which then generated tons of DEBUG level logging on machine-0 because of the workers
restarting, which then spammed the log file a lot.
Merge branch 'master' of https://github.com/juju/juju into api-implementation-guide
Merge branch 'master' of https://github.com/juju/juju into hook-queue-2
update imports
add direct tests for relation HookSources