[checklist] Feature migration to V1

[whisperity]

The full list of Envprobe's features that exist and should either be migrated to the new version or cut out. All migrated features should be tested #8!

• Shell hooking, control generation
  • Bash implementation
  • Zsh implementation
  • (epc) shell command
  • Cleanup of files for exiting shells (Put temporary files under /run/user/<id> if available ($XDG_RUNTIME_DIR) and clean them up at shell exit #11)
• vartypes - environment variable mapping to Pythonic types
  • Built-in heuristics for mapping a variable to such a type
• Understanding of environment and difference
  • Per-shell persistency
  • Environment loading
  • Difference between current and persisted
• Environment management commands:
  • get
  • set
  • add
  • remove
  • undefine
  • Proper shortcut handling for these
• Configuration file handling
• Variable tracking
  • Tracking configuration, two-level tracking overlay
  • (epc) track, (epc) default-tracking commands to control this configuration
• Saved configurations
  • Difference persistency (properly? PATH-like variable modifications overwrite instead of union in saves #2)
  • Respecting the tracking settings
  • diff
  • save
  • load
  • list, delete
• User-configured vartypes heuristics settings: (epc) set-type
• Community description features
  • Setting description locally: (epc) set-description
  • (epc) update-community
  • Respecting the downloaded community descriptions when resolving variable type.

[whisperity]

Sh*t... Well this v1 release is still not done because there are some PYTHONPATH magicks I was unable to work around with until now...

[whisperity]

Okay, I think this is now properly fixed and v1's development is almost at its conclusion! Just need to try it in production for a little while...