Improve writing experience

• Use the device's native resolution for rendering writing strokes
• Add options for users to change the stroke width in the settings

Add some new labels that are similar the existing ones

• Add small hiragana characters (ぁ, っ, etc.)
• Add ー character that appears frequently in katakana words.

v2.0

• Migrate to androidx libraries.
• Add collecting writing data option for improving the model.
• Use icons for some buttons.
• Scroll to the first result after evaluating.
• Open jisho.org to look up words.

v1.0

• Allow to save text to be copied later.
• Auto evaluate on input change.
• Auto clear canvas after selecting text.
• Build binary for armabi-v7a, arm64-v8a, x86 and x86_64 in a single apk file.

v0.1

Android app shipped with model trained on ETL_9B.