v0.2.0

Features:

• New --delay flag, which delays enqueueing of a task. Can be used on start and enqueue.
• --stashed flag for pueue add to add a task in stashed mode.

For Packager:

• Generating completion files moved away from build.rs to the new pueue completions {shell} {output_dir} subcommand.
  This seems to be the proper way to generate completion files with clap.
  There is a build_completions.sh script to build all completion files to the known location for your convenience.

Bug fixes:

• Fix edit command
• Several wrong state restorations after restarting pueue