Support for ps04

Added support for ps04.

Introducing ps03

Added support for ps03 - modal analysis

v0.2.6

Fixed an issue with a case study test function

v0.2.5: Merge pull request #5 from idsc-frazzoli/new-config

Updated configuration and function definitions.

v0.1.1

Initial working release of cs2solutions including intro notebook solutions and duckiebot dynamics.