v0.9.4

SymbolicUtils v0.9.4

Diff since v0.9.3

Closed issues:

• Fix encountering integer power (#244)
• Code view in documentation is (sort of) broken (#252)
• A typo? (#253)

Merged pull requests:

• Make print_tree show coefficients for Add and Mul (#246) (@adamslc)
• Sync docstring of simplify() with the actual code (#247) (@waldyrious)
• Fix domain error in Mul with literal base and power (#248) (@adamslc)
• Make Symbolics work with Rational numbers (#249) (@adamslc)
• Overload occursin (#251) (@YingboMa)