extended ISolver - dummy implementation
declared forceable and watchable variables for this solver
refactoring of variable model and pojo
set watch/force variables after init.
minor fix
Refactored data model
Merge remote-tracking branch 'origin/api-console' into development
add tests
Merge pull request #21 from openworm/physicstests

physics laws tests
Geppetto release 0.0.7
Merge pull request #22 from openworm/development

Development