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Adding an equation for fixing v_gen of certain flow units to a value determined by availability, flow, and capacity (both existing and invested). These units are indicated by a non-zero p_unit(unit, 'fixedFlow').

Solver might terminate normally (solvestat = 1) even when the model is found infeasible.

- Removed outdated workflow items
- Created json and sqlite templates for the database and added to the workflow

- Storing constant and timeseries form reserve demand in the same parameter

- Deleting constant alternative names from importer mappings
- Importing timeseries form of unit efficiency data into a separate parameter efficiency_ts and similar update to the exporter

This can be used in non-anticipativity constraint equations to speed up equation creation for the model.

Fix `storageValueUseTimeseries` not exporting to `p_gn` as in da2665c9

Replacing relationship classes restype_released_for_realization, restype_inertia, and unit_fail with parameters that have value 1 if the objects should be included in the corresponding Backbone sets

- Adding other efficiency curve related parameters for units in the `efficiency` Map
- Renaming input_output object class to io
- Renaming restype__direction relationship class to restype__up_down
- Renaming effLevel__group__unit relationship class to effLevel__effSelector__unit
- Moving boundary data from grid__node to grid__node__boundary
- Including p_groupPolicyUnit data in unit__group instead of creating a new group__unit relationship class
- Deleting commodity mappings
- Including ts_priceChange data in node

Remove commodity set and replace it with a parameter

See merge request !21

Issue #161

There was mixed contents with file name referring to Backbone v1.3 and content to v1.4.

Issue #161

Issue #161

Issue #161

First attempt to remove commodity set and replace it with a parameter telling if ts_priceChange should be used

Issue #161

Calculation of start-up costs and start-up fuel consumption

See merge request !20

Updating 'annual' energy constraints

See merge request !19

Issue #159

Issue #162

Introduced a new set `mst` with combinations of models, samples and t's.
Using projections in for calculating some lower-dimension subsets.

Previous solution was slow when there were many s's.

The parameters are in timeseries format.

Issue #160

Start-up fuels (=nodes) are now defined in p_uStartupfuel with fixedFuelFraction. They do not need to be included in p_gnu_io.

Issue #160

Poor performance when there were multiple samples used.

Also removed filter config files as they should be local.

Spill variable `v_spill` is actually treated as spill rate (MWh/h) in the equations, so fixed the description.
Result parameter `r_spill` is expressed in absolute energy, so rate must be multiplied with the step length.

# Conflicts:
#   defModels/building.gms
#   defModels/schedule.gms