Release v1.4.0

• 5c0d8b5 Consistent height of dropdowns and buttons
• 6affccd Merge pull request #17 from aiden2480/rembrandt
• 0a64279 Merge branch 'main' into rembrandt
• 1e60626 Implement check in popup fadeUp animation
• b9d0dab Popup modal fade up instead of disappearing
• 358de41 Implement popup modal on rembrandt submit
• 2cf9d39 Min percentage possible is zero
• 5deb1f8 Use relative kanji grading system
• aa3c5a1 use async/await in checkRembrandt

What's Changed

• Use Rembrandt to grade the user's kanji drawing by @aiden2480 in #17

Full Changelog: v1.3.2...v1.4.0