Opentepes

----------------------
- [FIXED] fix some pandas warnings

----------------------
- [FIXED] if there are system emission constraints no stage run can be done

----------------------
- [FIXED] check that the duration of all the stages is equal
- [FIXED] cycles of ESS and hydro reservoirs can't exceed the duration of the stage

----------------------
- [FIXED] fix the reservoir volumes at the end of the period and for every water cycle
- [FIXED] change the meaning of weekly storage/reservoir type by fixing the inventory/volume at the end of the month to the initial one

----------------------
- [CHANGED] avoid the use of max in bounds definition
- [FIXED] fixed some errors associated to ESS and hydropower plants

----------------------
- [FIXED] fixed some errors associated to hydropower plants parameters/variables
- [FIXED] fixed solving of the investment decision problem and computation of dual variables when there are many scenarios
- [FIXED] fixed computation of efficiency parameter of water reservoir and ESS units
- [FIXED] fixed computation of the hydro units water cycle
- [FIXED] fixed formulation of the maximum CO2 emission constraint