What's Changed

New features ✨

• feat: Add support for keyboard navigation to/from block comments. by @gonfunko in https://github.com/google/blockly/pull/9227
• feat: Add an option to copy subsequent blocks when getting copy data from a block. by @gonfunko in https://github.com/google/blockly/pull/9279

Bug fixes 🐛

• fix: Focus the first element in flyouts. by @gonfunko in https://github.com/google/blockly/pull/9228
• fix: Fire a VarTypeChange event when changing a variable's type. by @gonfunko in https://github.com/google/blockly/pull/9236
• fix: Fix order of arguments in IVariableMap.createVariable(). by @gonfunko in https://github.com/google/blockly/pull/9231
• fix: Fix toolbox categories tests by @RoboErikG in https://github.com/google/blockly/pull/9238
• fix: Refer to correct replacement method in deprecation warning. by @gonfunko in https://github.com/google/blockly/pull/9237
• fix: Make non-autoclosing flyouts stay open. by @gonfunko in https://github.com/google/blockly/pull/9245
• fix: Fix displaying HTML elements in FieldDropdown. by @gonfunko in https://github.com/google/blockly/pull/9258
• fix: dont save ids when copying blocks and comments by @maribethb in https://github.com/google/blockly/pull/9255
• fix: Allow overriding VariableModel via options.plugins. by @gonfunko in https://github.com/google/blockly/pull/9257
• fix: Scroll CommentBarButtons into view on selection. by @gonfunko in https://github.com/google/blockly/pull/9259
• fix: Check for existing event group in cleanUp() by @michaela-mm in https://github.com/google/blockly/pull/9265
• fix: dont add comments to full block fields by @maribethb in https://github.com/google/blockly/pull/9263
• fix: Display focused icons without transparency. by @gonfunko in https://github.com/google/blockly/pull/9268
• fix: Drag immovable and shadow blocks along with their parent. by @gonfunko in https://github.com/google/blockly/pull/9281
• fix: Update dependencies and schedule browser tests to run weekly on Mondays by @RoboErikG in https://github.com/google/blockly/pull/9297

Cleanup ♻️

• refactor: Make InsertionMarkerPreviewer's block serialization amenable to subclassing. by @gonfunko in https://github.com/google/blockly/pull/9282
• refactor: Associate comment bar buttons with the comment view. by @gonfunko in https://github.com/google/blockly/pull/9278
• refactor: Remove duplicated method from contextmenu_items.ts. by @gonfunko in https://github.com/google/blockly/pull/9289

Other changes

• release: merge master into develop after v12.2.0 by @maribethb in https://github.com/google/blockly/pull/9225
• release: Merge rc/v12.3.0 into master. by @gonfunko in https://github.com/google/blockly/pull/9335

Full Changelog: https://github.com/google/blockly/compare/blockly-v12.2.0...blockly-v12.3.0