v0.4.0

v0.4.0 (2019-07-07)

Diff since v0.2.0

Closed issues:

• When DiffRules produces an if/then then Derivative fails (#132)
• Fix variable printing (#129)
• Redefinition of an Unknown creates two instances for hashing (#128)
• Documentation? (#73)
• Fix order_lowering failure (#54)
• Build DiffEqSystem out of Expressions (#44)
• Functors or Interpolation objects as inputs (#13)

Merged pull requests:

• Include Jacobian in generated ODEFunction (#144) (ChrisRackauckas)
• Add static version of Wfact and negate the W operator (#142) (YingboMa)
• Convert :if blocks to ifelse calls (#134) (HarrisonGrodin)
• Fix variable displaying in REPL (#131) (HarrisonGrodin)
• Add CITATION.bib (#126) (asinghvi17)
• Start on API documentation (#125) (jlumpe)
• Say ModelingToolkit is ready to use (#124) (ChrisRackauckas)