Merge pull request #19 from pipelined/bump-deps

Bump deps

Merge pull request #18 from pipelined/bump-deps

use latest signal and pipe dependencies

Merge pull request #16 from pipelined/functional-api

Functional api

new import path

mp3: update signal dependency

Merge branch 'patch'

mp3: fix pump ErrUnexpectedEOF

mp3: remove input validation