support list of omx input skims instead of just one big file

[bstabler]

No description provided.

[bstabler]

@toliwaga - I believe this is in the https://github.com/RSGInc/activitysim/tree/multi_zone branch now?

[toliwaga]

yes - the whole skims config specification has been expanded to support 1, 2, and 3 zones - and multiple skims file support is included for all.

[bstabler]

For documentation purposes, here's an example usage for three zones

taz_skims: 
  - HWYSKM_AM_taz.omx
  - HWYSKM_EA_taz.omx
  - HWYSKM_EV_taz.omx
  - HWYSKM_MD_taz.omx
  - HWYSKM_PM_taz.omx

tap_to_tap:
  skims:
    - transit_skims_AM_SET1.omx
    - transit_skims_AM_SET2.omx
    - transit_skims_AM_SET3.omx
    - transit_skims_EA_SET1.omx
    - transit_skims_EA_SET2.omx
    - transit_skims_EA_SET3.omx
    - transit_skims_EV_SET1.omx
    - transit_skims_EV_SET2.omx
    - transit_skims_EV_SET3.omx
    - transit_skims_MD_SET1.omx
    - transit_skims_MD_SET2.omx
    - transit_skims_MD_SET3.omx
    - transit_skims_PM_SET1.omx
    - transit_skims_PM_SET2.omx
    - transit_skims_PM_SET3.omx

[bstabler]

this has been released