Release v0.15.0

Upgrade overview

This release contains upgrade notes that deviate from the norm:

⚠️ Requires database migrations: user.open_id will be removed.
The default storage setting for resources will be local instead of database.

Improved the account security with access tokens.
- You can remove the access token to disable the login state from other devices;
- You can generate access tokens to call APIs, and they can never expire;
- ... learn more in Access Tokens.
Two new pages:
- User profile: A separate home page for yourself.
- Resources with timeline view: Display the resource according to the timeline to solve the problem of disorganization. And you can also quickly find related memos.
Added support for parsing LaTeX syntax. Thanks @kadaliao for #2209
Added cache for editor content when creating or editing.