Merge pull request #94 from rowland66/fix-superfluous-namespace-decla…

…ration-cleanup

Fixed the removal of superfluous namespace declarations

Merge pull request #86 from adamdecaf/docs-usage-improvements

docs: mention types.Signature

Merge pull request #79 from jupenur/canonicalPrep

Fix deletion of attributes in-place

Bump Go versions in Travis

Merge pull request from GHSA-q547-gmf8-8jr7

Improved Signature object shape validation