A re-release of v0.4.0 with a committed Cargo.lock file

Added

• New --stat-digits to specify the number of digits of precision for the --stat format

Mainenance

• Updated and removed various dependencies

• Renamed fe to fre to avoid conflicts on crates.io
• Generalized the code so it can be used for things other than directories

This release includes everything needed to use fe for most every-day situations.