v0.9.1

SymbolicUtils v0.9.1

Diff since v0.9.0

Closed issues:

• Error when substituting Num values into trigonometric expressions (#223)
• Order of symbols in term rewriting rules (#227)
• Excess parens in printing (#232)

Merged pull requests:

• Small page/manual link fixes (#221) (@TymonKilich)
• Keep quotation marks when printing strings in Terms (#225) (@MasonProtter)
• Less parens in printing (#234) (@shashi)