• [ci skip] bump to 3.3.1 11f1f139
• Merge pull request #5594 from rslawik/patch-1 e477a6f3
• Merge pull request #5600 from Polymer/TimvdLippe-patch-2 dc20feca
• Remove TimvdLippe from CODEOWNERS b99c2997
• Merge pull request #5598 from Polymer/polymer-dom-api 8c69fb87
• Add node field to PolymerDomApi 15747c83
• Improve types for the template field on Polymer elements. (#5596) 4274bcec
• Add module field 9a4d4d9a
• Merge pull request #5584 from Polymer/closure-__hasRegisterFinished f6ccc9d1
• Wrap other hasOwnProperty checks in JSCompiler_renameProperty. 0541b21a
• Wrap hasOwnProperty checks for __hasRegisterFinished in JSCompiler_renameProperty(). 9e90fd2e
• Merge pull request #5578 from Polymer/fix-placeholder-typing 96c125ee
• Fix typing error in fixPlaceholder f050ce9e
• Merge pull request #5577 from Polymer/ie-placeholder-binding 7d6d7152
• Fix up comments based on feedback ab49f51a
• Workaround bindings to textarea.placeholder in IE 61767da2
• Add additional externs (#5575) 69ee4688
• Merge pull request #5566 from Polymer/compile e7e4c241
• Make Closure compiler happier about ShadyDOM access 46ee2aec
• Remove other double import (#5565) 0d2c2e5d
• Only use CONST_CASE for constants. (#5564) 54f8b47f
• [skip ci] update changelog ac12b3bc

https://github.com/Polymer/polymer/compare/v3.3.0...v3.3.1