* fix: use plenary.path to manage paths in Windows
* fix: filter out paths validly in Windows
* fix: detect default `ignore_patterns` in Windows
fix: #169
* fix: join paths validly in Windows
* docs: fix value for `ignore_patterns` in Windows
* fix: avoid duplication of separators in paths
Fix: #171
This fixes only in native logic. The one with SQLite has still bugs.
……but that may not be fixed.
