I have updated the Actuator files to allow for force and speed outputs.
Added outputs to Muscle. Hooked into Thelen2003Muscle and added Thelen2003Muscle to testComponents. TODO: repeat for Millard2012EquilibriumMuscle.
Merge branch 'master' of https://github.com/opensim-org/opensim-core into addOutputsToMuscles
Outputs should now be available for Millard2012EquilibriumMuscle as well. Note that Millard2012AccelerationMuscle makes testComponents kerplode ("testComponents.exe has stopped working" error on Windows). Probably not worth investigating at this time, since nobody uses the Acceleration model.
Ignoring issues with the Acceleration muscle.
Add probe output as an Output. Also, include metabolics probes in osimSimulation.h
Merge branch 'master' into ProbeOutputs
In travis, run tests for python wrapping.
Fix travis syntax error.
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update to latest lepton from openmm.

This fixes the size_t warnings from VS2013.
Made a bunch of change to Model, adding output and replace old property construction with new property construction

clean up old convention in Model

Fix a bunch of bugs, take care of string property parsing so that it treats the whole property value as a single string in case that the property allows only one value.

clean Model a little bit
Un-duplicate comments for properties.
Fix typo

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Fix typo in comment.

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