Feature Request: support loading psl and/or bed12 tracks

[malcook]

support loading psl and/or bed12 tracks

[rbuels]

How about making a bigPsl or bigBed out of it? JB1 should be able to use that nicely.

[cmdcolin]

bed12tabix is allowed as are bigbed. loading PSL/bigPsl could be interesting though. bigPsl would probably load as a track but displaying the alignment substructure in that file would still need to be added as a custom glyph or similar