Update travis, correct windows dependency, close #27

In windows, the deprecated flag should be placed before the
function declaration.
Also, correct macro name for dllimport.

The gripper control entity now prevents closing the gripper more
if the maximal torque value is reached.

Correct the time incrementation for control recomputation

This modification allows to avoid a strange stairs shape of the controller.

Make the velocity signal available even when the robot is not controlled...

This setting enables to have the value of the velocity independently from the control.

Set signal values after integrate but before "after" periodic call

Set the signal values AFTER the integration

Add Homogeneous To position entity  + correct derivator class

The difference should be divided by the time step,
not multiplied.

isPluged -> isPlugged.

This is necessary to ensure synchronization when receiving trajectories.

Add const to display method.
Remove display in parsing initial method.
Add ostream operator<< to timestamp class.

Fix waist, add debug + rational for message handling.
 - waist type is now MatrixHomogeneous and not ml::Vector anymore.
 - add traces
 - messages are better handled based on timestamped and seq id.

trajectory.cpp is not a plugin.

Fix warnings in fir-filter.
Add trajectory initialization through command.

This makes sure that the entity joint-trajectory-command has always
something to provide at the starting point.

This commit introduces boost:regex in sot-core.

Add trajectories to sot.