v1.5.3

Replaces v1.5.2:

Changes:

• ⚠️ removed: sling-lightning-conf, it was too messy to support this just to dynamically load options for sling. If you need to dynamically load options from a file use these: ~/.lightning/config or ~/.lightning/<network>/config
• fix: don't ignore general config file if a network config file exists
• fix: sling-stop/sling-deletejob race condition that prevented some jobs to stop in some cases
• fix: sling-stop/sling-deletejob deadlock