Code name: Knock knock, I am ready for a first release.

The goal is to propose a data structure able to represent and store the content of a movement acquisition in a flexible and generic way. For example. Only three major kinds of objects will represent the content of a movement acquisition:

• A ma::Trial object stores the configuration and all the data acquired.
• ma::TimeSequences objects store acquired data (e.g. marker, analog, event, force, pose).
• ma::Hardware (e.g. force plate) objects store a configuration, knows the associated input data (ma::TimeSequence objects) as well as how to generate output results.

This structure will be documented and tested against the reading and writing of C3D files.