Flexing ARMs

• Fix build on armv7/aarch64 (#1)
• Pick a couple of clippy nits

Don't panic

Fixed

• Don't panic on NULL bytes in paths on Unix.

Docs and Dirs

Fixed

• Windows: Executable check on folders
• Depend on appropriate libc version

Changed

• Rework docs

Tweaky Android

Changed

• Fix README example
• Tweak docs
• Update to latest libc

Fixed

• Build on Android, probably.

Window Access

Added

• Windows support via AccessCheck and a ridiculous amount of supporting code.
• PathExt::access allowing for multiple accessibility types to be tested in one, and for error information to be received.