v1.5.0

SymbolicUtils v1.5.0

Diff since v1.4.0

Merged pull requests:

• fix typos (#555) (@musvaage)
• NaNMath.pow fix (#557) (@contradict)
• Remove compat with AbstractTrees 0.3 (#564) (@nathanaelbosch)
• refactor: add symbolic_type trait impl from SII (#566) (@AayushSabharwal)

Closed issues:

• Metadata is lost on construction of Mul (#546)
• typos (#554)
• SymbolicUtils seems broken on Julia 1.6 (#563)