v0.6.3

SumOfSquares v0.6.3

Diff since v0.6.2

Closed issues:

• Question about optimizing simple polynomial program (#230)
• Formulating trigonometric functions within SOS (#252)
• Rendering the underscore in the online documentation (#256)

Merged pull requests:

• Add example on using TypedPolynomials (#242) (@blegat)
• Simplify hermitian examples (#250) (@blegat)
• Two minor corrections in the docs for SumOfSquares. (#254) (@hurak)
• Add sign symmetric tutorial (#258) (@blegat)
• Fix title for Sign Symmetry tutorial (#259) (@blegat)
• Remove unused type annotation (#261) (@blegat)
• size -> axes (#262) (@blegat)