v0.7.2

MultivariateOrthogonalPolynomials v0.7.2

Diff since v0.7.0

Merged pull requests:

• Support more triangle gram matrices (#189) (@dlfivefifty)
• sum for RectPolynomial (#191) (@dlfivefifty)
• CompatHelper: bump compat for ClassicalOrthogonalPolynomials to 0.14, (keep existing compat) (#195) (@github-actions[bot])