1.2.0

New features:

• Runs a coordinator that checks Mattermost connectivity every 5 minutes. Previously if the Mattermost server went offline, the component would just silently fail (well, it would put an error in the log).
• Adds a new entity (binary_sensor) for Mattermost server connectivity.
• Marks the integration as failed after a few missed connectivity checks.
• Backs off exponentially but still tries to reconnect.

1.1.0

Bug fixes:

• Get image posting to actually work
• Ensure images aren't loaded synchronously (fixed #3)

1.0.0

Adds basic Mattermost functionality.

Features

• Bot Token Authentication: Uses Mattermost bot tokens for secure API access
• Text Notifications: Send formatted text notifications to Mattermost channels
• File Attachments: Upload and share local or remote files with messages
• Multi-Channel Support: Send notifications to multiple channels simultaneously

Requirements

• A Mattermost server (self-hosted or cloud)
• A bot access token with appropriate permissions
• Bot account enabled in your Mattermost instance