magpiemodel/magpie: MAgPIE 4.1

This release version is focussed on consistency between the MAgPIE setup and the REMIND model and result of a validation exercise of the coupled REMIND-MAgPIE system. added 80_optimization added support for GAMS version 26.x.x scripts added new start and output scripts license added exception to the applied AGPL license to clarify handling of required GAMS environment, solver libraries and R libraries changed 56_ghg_policy apply reduction factor on CO2 price to account for potential negative side effects; lowers the economic incentive for CO2 emission reduction (avoided deforestation) and afforestation 56_ghg_policy non-linar phase-in of GHG prices over 20 year period 56_ghg_policy multiply GHG prices with development state to account for institutional requirements needed for implementing a GHG pricing scheme 40_transport introduced transport costs for monogastric livestock products NPI/NDC scripts added forest protection policy for Brazilian Atlantic Forest in default NDC and NPI scenarios NPI/NDC scripts harmonized the starting year of the NDC policies 2020. interpolation scripts changed output files to seven magpie land use types, added additional cropsplit script for more detailed cropland output 15_food clean-up and cosmetic changes (correction of comments, parameter names, structure of code); update BMI share calculations with the values of the last consistent MAgPIE/food-demand-model iteration fixed 42_water_demand bugfix environmental flow policy harmonization for historic period 57_maccs correction of cost calculation; Conversion from USD per ton C to USD per ton N and USD per ton CH4 was missing. 71_diagg_lvst adjusted monogastric disaggregation for more flexiblity to avoid infeasibilities with EFPs (see 42_water_demand) 15_food correction regarding the convergence measure of the iterative execution of the food demand model and MAgPIE; correction accounting for unusual time step length in body height calculations; body height regression parameters update