0.3.0-rc3

What's Changed

• add bench by @doubleailes in https://github.com/doubleailes/fls/pull/30
• add gif by @doubleailes in https://github.com/doubleailes/fls/pull/32
• 35 add a real sample to test many files by @doubleailes in https://github.com/doubleailes/fls/pull/36
• 37 try to implement threading pool by @doubleailes in https://github.com/doubleailes/fls/pull/38

Full Changelog: doubleailes/fls@0.2.0...0.3.0-rc3