Software Improvements and Bug Fixes

• minor usability improvements to the JAMS GUI / window layout

New / Improved Model Components

• J2K_iso
  • model components for the simulation of isotope mixing, unmixing and transport
• jams.components.io.TSDataStoreReader
  • adapted to work with different calendar types as found in some climate models (standard calendar, 360-day calendar, standard calendar w/o leap years)