v0.17.0

Soss v0.17.0

Diff since v0.16.2

Closed issues:

• Leaky M (#67)
• Double citation for SymPy (#101)
• Nested models (#130)
• Clean up SymPy output (#138)
• Move all the Python stuff to the new SossSymPy.jl package (#170)
• Nested traces (#227)

Merged pull requests:

• CompatHelper: bump compat for "SpecialFunctions" to "1.0" (#224) (@github-actions[bot])
• Dev (#233) (@cscherrer)
• WIP: add basemeasure for models (#239) (@mschauer)
• Dev (#244) (@cscherrer)
• fix leaky M (#249) (@thautwarm)
• Dev (#254) (@cscherrer)