Conditions for making NavAbility/DistributionsJSON.jl

[dehann]

Motive:

• need a stable interface/types for serializing distributions.jl
• needs to play nice with other sample belief types, aka MKD, heatmaps, KDEs, etc.

Conditions for avoiding a new package and simply used the built in features of:

• DFG v1 can only @reexport upstream v1+ features DistributedFactorGraphs.jl#1141
  • Require Distributions.jl v1
  • Require JSON.jl v1

Otherwise create a new package to stabilize API:

• create the new package NavAbility/DistributionsJSON.jl (Apache 2), likely including code such as:

  IncrementalInference.jl/src/Serialization/entities/SerializingDistributions.jl

  Line 23 in 7dc8f3c

  Base.@kwdef struct PackedCategorical <: PackedSamplableBelief

• include readme explaining the v1 reexport conditions above so that DistributionsJSON.jl can be archived as soon as JSON v1 and Distributions. v1 are released.