Want a Matrix client that uses Vim keybindings

[ulyssa]

I want a Matrix client for the terminal that uses Vim keybindings for editing messages and managing windows. To start with, it should support the following:

• Choosing between multiple accounts at startup
• Listing rooms, direct messages, and spaces
• E2E device verification using Emojis
• Fetching message scrollback, and sending messages
• Local echo of sent messages
• Multiline messages
• Highlight usernames to help distinguish senders

I have written the modalkit crate to help with supporting Vim's keybindings. A lot of editing features are supported, but there are still several things remaining that iamb will need or probably want:

• Support text completion modalkit#29
• Support paragraph and sentence movements modalkit#34
• Support clipboard registers modalkit#31
• Support rendering borders and window titles in WindowLayout modalkit#67