Updated tollgate file i.e. added issing code lines.

Mod is formally updated to v1.56. There are no differences with v1.51 so it‘s compatible.
Minor update of currencies from ECB site for September average.
Diesel prices updated (once per week) as of 29th of September.

Minor update of currencies from ECB site for July average.
Diesel prices updated (once per week) as of 11th of August.

Mod is formally updated to v1.55. There are no differences with v1.51 so it‘s compatible.
Minor update of currencies from ECB site for June average.
Diesel prices updated (once per week) as of 7th of July.

Minor update of currencies from ECB site for May average.
Diesel prices updated (once per week) as of 2nd of June.

Mod is formally updated to v1.54. There are no differences with v1.51 so it‘s compatible.
Minor update of currencies from ECB site for March average.
Diesel prices updated (once per week) as of 14th of April.

Minor update of currencies from ECB site for February average.
Diesel prices updated (once per week) as of 10th of March.

Minor update of currencies from ECB site for January average.
Diesel prices updated (once per week) as of 3rd of February.
driver_max_cargo_damage: 4.0 -> 1.0
driver_revenue_coef_per_km: 0.025 -> 0.03
driver_cargo_market_revenue_coef_per_km: 0.03 -> 0.04
revenue_coef_per_km: 0.05-> 0.06
cargo_market_revenue_coef_per_km: 0.06 -> 0.075

Added 10 fictitious ferry lines introduced in Greece DLC:
Argostolion - Patras and vice versa (I used Sami).
Argostolion - Igoumenitsa and vice versa (I used Sami – Patras x2).
Chania - Kalamata and vice versa (I used Piraeus).
Igoumenitsa - Trieste and vice versa (I used Venice).
Patras - Trieste and vice versa (I used Venice).

There is ferry line Lixouri - Argostolion which is a "complete fantasy" as per SCS comment inside file so I didn't change anything.

Mod is formally updated to v1.52. There are no differences with v1.51 so it‘s compatible.
Added Greece.
Added 22 real ferry lines introduced in Greece DLC. They all have corrected time and price like IRL.
Minor update of currencies from ECB site for November average.
Diesel prices updated (once per week) as of 10th of December.