0.8.4

This includes a set of bug fixes and small improvements.

Bug fix

• Fix Textmate illegal display in some conditions (@Coyamo )
• Fix cursor animation position and add switch
• Fix composing text prevents auto-completion
• Hide completion panel when undo/redo
• Fix crash bug when click enter with the completion window shown
• Fix text style rendering on devices before Android Q (API 29)
• Fix invalid parameter passed to ContentListener#afterDelete
• Fix unreported modification in Content
• Fix text can be modified by action window when not editable
• Fix that mis-colored text is shown when modification is made but analysis is not done
• Fix error layout offset in CodeEditor#getOffset

Improvements

• Hide completion panel when undo/redo
• Magnifier will not show, when text size is big
• Color of EdgeEffect is automatically extracted from context theme's colorPrimary
• Supports 4-char emoji display and edit
• Improve performance of magnifier on old devices
• Draw shadow for divider if line number is pinned
• Maintain code blocks on edit