v1.16.0

Features & Bug fixes:

• Add auth support for subscribing with CLI (#147/#148, thanks @lrabane)
• Add support for ?since= (#151, thanks for reporting @nachotp)

Documentation:

• Add watchtower/shoutrr examples (#150, thanks @rogeliodh)
• Add release notes

Technical notes:
As of this release, message IDs will be 12 characters long (as opposed to 10 characters). This is to be able to
distinguish them from Unix timestamps for #151.