CPACS 2.3.1-beta

CPACS 2.3.1 is a beta release, all parameters may be subject to change. Please see GitHub for the full changelog.

CPACS 2.3.1 is now available

Added a branch for the definition of design studies.
Added thermal properties for materials.
Revised the definition of flights/flightplans.
Added an airline definition.
Added structure for skid gear components.
Changed the units for material density to SI units.
Revised the top level fleets node and put it into the new airline node.