ANN: SimPy version 1.4.2 has been published

[Klaus Muller]

It is our pleasure to announce SimPy version 1.4.2, a maintenance 
release of the SimPy discrete event simulation package. Download it from 
http://simpy.sourceforge.net where you also find tutorials, examples and 
   extensive documentation!

SimPy (= Simulation in Python) is an object-oriented, process-based 
discrete-event simulation language based on standard Python and released 
under the GNU GPL. It provides the modeler with components of a 
simulation model including processes, for active components like 
customers, messages, and vehicles, and resources, for passive components 
that form limited capacity congestion points like servers, checkout 
counters, and tunnels. It also provides monitor variables to aid in 
gathering statistics. Random variates are provided by the standard 
Python random module.

Many users claim that SimPy is one of the cleanest, easiest to use 
discrete event simulation packages!

SimPy comes with data collection capabilities, GUI and plotting 
packages. It can be easily interfaced to other packages, such as 
plotting, statistics, GUI, spreadsheets, and data bases.

Changes from version 1.4.1
==========================
Histogram
---------
	- class Histogram has been added to modules SimulationRT,
	SimulationTrace and SimulationStep. It had been accidentally
	omitted.

testSimpy.py, Monitortest.py
----------------------------
	- An error in the tests for monitored Resource queues has been
          fixed.

SimulationTrace
----------------
	- This module now also accepts the "yield hold,self" form which
           defaults to zero delay.

Additions
===========
testSimPyRT, testSimPyTrace, testSimPyStep
-------------------------------------------

	- These unittest modules have been added. They test the
           respective simulation modules with exactly the same tests as
           testSimPy tests module Simulation with. Thus, they test for
           compatibility.

Klaus Muller (kgmuller at users.sourceforge.net)
Tony Vignaux (vignaux at users.sourceforge.net)