fix double slash on buildURL (mattermost-community#615)

Mac: Update rate button text.

Add the plugin build to prod-release

Ensures cgo is disabled for plugin compilation to avoid libc linking (m…

…attermost-community#565)

Update changelog and what's new

Add LDFLAGS to plugin build (mattermost-community#474)

Co-authored-by: Miguel de la Cruz <[email protected]>

Rev Mac app build version

Beta badge (mattermost-community#404)

Update for v0.6.7

Rev Mac built to 12