v0.6.37

ApproxFunOrthogonalPolynomials v0.6.37

Diff since v0.6.36

Merged pull requests:

• tests for normalized space derivative Evaluation (#270) (@jishnub)
• change latest to dev in readme (#271) (@jishnub)
• Move misc. ApproxFunBase tests to ApproxFunBase (#272) (@jishnub)
• Make points test approximate (#274) (@jishnub)
• Move Static to an extension (#275) (@jishnub)