New editor buttons & mobile full screen mode

[mrwweb]

v1.5.0 (February 28, 2024)

• New Editor fullscreen mode when editing on phones! (Added close button when editor is in fullscreen mode). Closes #8
• New button to insert planlove brackets (e.g., "[]"). Closes #18
• Ctrl + s will now save your plan. Closes #17
• Reordered toolbar buttons to put formatting buttons first
• "Change Plan" button aka save button gets a fun disk icon
• Roll back previous change that tried to target all editors. Only apply to the main Plan text editor for now (not notes, secrets)