62071 Make it an error to break doc macros (and fix existing broken macros) (cla: yes, f: material design, framework, waiting for tree to go green)

62072 SelectableText handles after Select All (cla: yes, f: material design, framework, waiting for tree to go green)

62075 Update the About dialog to use the new button API. (cla: yes, f: material design, framework, waiting for tree to go green)

62092 Updated Material library documentation references to the old button classes. (cla: yes, f: material design, framework, waiting for tree to go green)

62099 Updated references to the old button classes to the new classes in widgets, services, and rendering packages (cla: yes, d: api docs, d: examples, documentation, f: material design, framework, waiting for tree to go green)