Wait for PrepareForSleep(false) before re-inhibiting

Automatically restart service on failure

Check error of releasing lock

Minor tidyup

readme: add some useful links

Update changelog

Fix freeze when starting a unit

Fix bogus formatting sytax

Make the aliasing explicit

Some go tools get confused otherwise.

Update README example to be safer

Only unlocks the session if swaylock exits cleanly

Slightly expand README

Block until targets are reached

And expand docs on how to make sure the locker is ready before the
target is reached.

Inhibit sleeping to ensure we have time to react

This is still imperfect; see linked article for additional upcoming
changes in v3.0.0.

go mod tidy

Add builds badge to README

Run builds on CI

Fix lock services not stopping after waking up

Run in session.slice

From systemd.special(7):

> session.slice
>   All essential services and applications required for the session should use
>   this slice. These are services that either cannot be restarted easily or where
>   latency issues may affect the interactivity of the system and applications.
>   This includes the display server, screen readers and other services such as
>   DBus or XDG portals. Such services should be configured to be part of this
>   slice by adding Slice=session.slice to their unit files.

Include a changelog

Improve the README