v0.5.8

SemiclassicalOrthogonalPolynomials v0.5.8

Diff since v0.5.7

Merged pull requests:

• Fix constructing from b=-1 (#117) (@DanielVandH)
• Implement weighted conversion between b=-1 polynomials (#118) (@DanielVandH)

Closed issues:

• Constructing from b=-1 (#115)