@startuml

title Flow of Development Commits from Trunk to Release

actor Developers
participant Trunk
participant Test
participant Stable
participant Release
actor Users

activate Developers
activate Trunk
activate Test
activate Users

Developers ->> Trunk: commit 23054
Developers ->> Trunk: commit 23055

Trunk -> Test: weekly merge
Test -> Users: publish casapy-test

Developers ->> Trunk: commit 23056
Developers ->> Trunk: commit 23057
Developers ->> Trunk: commit 23058

Trunk -> Test: weekly merge
Test -> Users: publish casapy-test

Developers ->> Trunk: commit 23059

Trunk -> Test: weekly merge
Test -> Users: publish casapy-test

Developers ->> Trunk: commit 23060
Developers ->> Trunk: commit 23061
Developers ->> Trunk: commit 23062
Developers ->> Trunk: commit 23063

Trunk -> Test: weekly merge
Test -> Users: publish casapy-test

Test -> Stable: create stable-2013-03
activate Stable
Stable -> Users: publish casapy-stable-2013-03
note left of Stable
  stable-YYYY-MM 
  typically has a useful 
  life of one month.
end note

Stable -> Release: create release-4_1_0
activate Release
Release -> Users: publish release-4_1_0-pre-1
Release -> Users: publish release-4_1_0-pre-2
Release -> Users: publish release-4_1_0-pre-3
Release -> Users: publish release-4_1_0-final
note left of Release
  release-X_Y_Z
  typically has a useful 
  life of six months.
end note
note right of Release
  bug fixing not shown.
end note
deactivate Stable

@enduml