Markra v1.4.0

[log]

v1.3.0...v1.4.0

compare changes

🚀 Enhancements

• app: Add paragraph spacing and flexible windows (#504)
• Import local files as attachments (#506)

🩹 Fixes

• desktop: Close settings with last user window (#501)

🏡 Chore

• Release v1.4.0 (bb50f8a)

❤️ Contributors

• MuRong (@murongg)
• 金 Ian Weihang (@jian45154)