v1.1.8

Polynomials v1.1.8

Diff since v1.1.7

Closed issues:

• Extend isreal & real for Polynomial? (#258)
• Fit using Integer y values doesn't work (#268)

Merged pull requests:

• Add is_, as_, isreal, real, isintegerpoly & asintegerpoly (#259) (@singularitti)
• add multroot function (#260) (@jverzani)
• integrate in map, any, all, as possible (#264) (@jverzani)
• add generated norm function for ImmutablePolynomial (#266) (@jverzani)
• Close Issue 268 (#269) (@jverzani)