About third-party sync storage integration

[ACTCD]

We understand that this need can be extensive, so we'd like to list some integrated sync storage modules that we think would be appropriate to add to this project:

• Better iCloud sync integration #424
• Support GitHub Private Repositories sync integration #521
• WebDAV

We make no promises or estimates of when they will be implemented, but we will consider implementing these integrations when conditions allow.

Some integrations that may be widely used, but we don't intend to add to this project:
Dropbox
OneDrive
Google Drive