v4.10.4

Symbolics v4.10.4

Diff since v4.10.3

Closed issues:

• Need Help .I have several questions (#652)
• Fix downstream MTK failures (Jul 26) (#669)
• Q: Lie series method for PDEs (#672)
• semipolynomial_form fails to process internal structure properly (#679)
• semipolynomial_form ignores non-integer exponent (#680)
• semipolynomial_form with flag const = false doesn't work in an edge case (#681)
• Result of semipolynomial_form does not match input degree (#682)
• semipolynomial_form does not work with nested ^ operation (#684)
• Symbolics.jl | Interfacing - building an expression tree to use custom rules (#687)
• Q: composition rules for differential operators? (#689)
• Symbolic matrix exponential (#690)

Merged pull requests:

• update docs for semipoly.jl (#675) (@shashi)
• Fix and refactor semipolynomial_form (#678) (@bowenszhu)
• Fix the first tutorial... (#688) (@ChrisRackauckas)
• RefValue handling in symtype inference (#696) (@shashi)