New feature model

[garrettjstevens]

@shashankbrgowda I looked at cdsLocations vs getDiscontinuousLocations, and I'm not sure what the difference is you're seeing. One thing to maybe note is that cdsLocations can return multiple location arrays for one parent feature. For example, if an mRNA has two CDS children, cdsLocations would return e.g.

[
  [
    {"min": 3300, "max": 3902, "phase": 0},
    {"min": 4999, "max": 5500, "phase": 1},
    {"min": 6999, "max": 7600, "phase": 1}
  ],
  [
    {"min": 3390, "max": 3902, "phase": 0},
    {"min": 4999, "max": 5500, "phase": 1},
    {"min": 6999, "max": 7600, "phase": 1}
  ]
]

[garrettjstevens]

Superseded by #412