When the stoichiomtric coefficient is invalid (not a number), it is set to 1.0

Do not check if there is the keywords release or hotfix in the commits. Deploy when master is pushed

Fix #9

Fix #11

Fix #8

This is to be sure that this is the network that links elements

Not compatible with the add checking : we can't add an entity not empty to a network

fix #1

Add getShortDescription and getLongDescription to AbstractMet4JApplication

Main now returns shorter description.