Adding support for long time intervals in the first block, according to the suggestion in issue #68. Adding a couple of checks for the compatibility of the first interval block and t_jump.

Issue #32: Run-up and shutdown trajectories overhauled to permit SOS2 ramping on the last/first run-up/shutdown intervals, as well as include main fuel consumption during run-up/shutdown. However, this formulation still fails to consider changing interval lengths.

Solving issue #27. Allows to set v_gen for the first time step of the first solve (e.g. t000000). Use useInitialGeneration and initialGeneration in p_gnu to get this to work.

'reserveReliability' changed from a fixed reduction in reserve commitment limits to an efficiency-like property. Now only a portion of the committed "unreliable" reserves are accounted for in 'q_resDemand' until the realization of said reserves (commitment ahead of time is still made with the reliability reduction).

Minor readability and performance upgrades on fixing the previously realized startup/shutdown/online variables.

Further fixes to 'uft_onlineLP_withPrevious' and 'uft_onlineMIP_withPrevious' and fixing the historical startups to allow for arbitraty 'stepsPerInterval' on the first interval.

Set 'sft' does not contain 'ft_realized' which caused some important variable fixes not being made. Fixed by adding new sets 'sft_realized' and 'sft_realizedNoRseset' which include the realised t's.

Note: Smoothing for ts_node is not implemented yet

Samples can now be used to describe uncertain future after the forecast horizon

"restypeReleasedForRealization" is now handled through the "ft_reservesFixed" set, instead of separate lines to free the previously locked reserves.

Removing the "t_activeNoReset" by including "tmp_dt" historical time steps into "t_active" and avoiding loops over the entire model history.
Implementing a new "unitCounter" set to limit excessive looping over the "counter" set in unit startup/shutdown constraints.

Reserve dummy variables use similar indexing as other reserve variables (again), and should now "stack" properly on each other so that lacking reserves in the commitment phase (vq_resDemand) are not penalized again in the real-time phase (vq_resMissing).

Removing the ill-defined "p_nnReserves(... 'ratio')" parameter and replacing it with relative capacity bounds similar to "p_nuReserves(..., up_down)".
"restypeDirectionNode" set also changed to be more inclusive to avoid issues with not generating "q_resBalance" equation for nodes with no reserve requirements, but still connected to nodes with reserve requirements or units with reserve provision capabilities.

Renaming "df_nReserves" to "df_reserves", changing "mft_nReserves" to "ft_reservesFixed", as well as a lot of accompanying changes.

Removing the rounding of startup and shutdown variables, as they cause issues for the "directOnLP" approximation.

Changed 'ts_nodeState' to 'ts_node' for clarification (since penalty time series should also be implemented, which does not refer to the node state)

Reserve length is now a node property instead of a model property. In addition each reserve category can be turned on or off in the model settings.

Changing the v_resTransferRightward and Leftward to be fixed after reserve gate_closure and to be released if in restypeReleasedForRealization. vq_resMissing will handle infeasibilities if VRE has promised too much. Addresses issue #10.

Added the option to include an initial online status for units (issue #11) for the time step before the first solve.

* taking investment costs into account in cost results calculation
* adding transfer link investment possibility sets
* moving run-up and shutdown trajectories into their own 'blocks' to speed up the model
* commenting out some forecast related sets that are not used anymore
* updating info file writing

Implementing maxFuelCons and maxFuelFraction. For main fuels, the parameters function as their names suggest; for start-up fuels, maxFuelCons is not implemented and maxFuelFraction is treated as exact fraction.