v4.6.0

• Allow to define heuristics in heuristics.yaml
• Migrate all languages from vim beginning with "a"
• Remove enhanced cpp syntax (it was too slow to load)
• Use setf instead of set ft for setting filetype (faster)
• Override native hauristics with au!
• Add globbing of files for packages
• Replace predefined dirs with extra_dirs and ignored_dirs
• Allow to define proper order of packages with topological sort
• Fix powershell detection
• Lint and fix many packages.yaml issues