removes debug print

successfully upgrades icu crate dependency to v2

uses latest version of cargo dist to create next release

updates version and changelog

bumps internal version

bump version of Tidy

preps release v0.3.8

adds changelog

Merge pull request #50 from sts10/refactor_sd_and_schlinkert

Use a refactored, faster implementation of the Sardinas-Patterson algorithm

adds path to readme to Cargo.toml