- extended the supported syntax to string, extract string, ranges with various formats and comparators: alphanumeric, true-alphabetical, numeric (integers), numeric (floating point)
- full unit tests coverage of the syntax

- introducing value converters from various types of metadata to types accepted by matchers (string, bool, float, int)

- fixes in value converters from various types of metadata to types accepted by matchers (string, bool, float, int)

- mdata value matchers for boolean (valueB) and string (value, valueS, valueD, valueE, valueED) fully covered by unit tests and bugs fixed

- console messages more accurate
- DOM-based watcher for deferred File Explorer view to automatically apply custom sort when File Explorer view is actually displayed

…r view to enable smoother auto-application of custom sorting

# Conflicts:
#	src/main.ts