Change Log_V_1.2
- added Gates A6, A7, N2, N3, N5, N10, N15, N20, S3, S5.
- removed duplicate gates B3, B6, B7, C15
- applied airlines codes to each gates (now our KSEA fully working with FSTL Live traffic)
- added missing prefix “N” on Parking numbers on tarmac
