v3.2.4

Polynomials v3.2.4

Diff since v3.2.3

Closed issues:

• Inconsistent return type of domain? (#456)
• Is the order function still defined? (#457)

Merged pull requests:

• add unexported critical points (#458) (@jverzani)
• Fix show for type Interval (#460) (@singularitti)
• Deprecate order, use degree (#461) (@singularitti)