Add circleci badge

Update rebar.config

Merge pull request cqerl#141 from waisbrot/rebar3

Update to use rebar3

Merge pull request cqerl#140 from chrzaszcz/master

Fix expected message format for the preparation_failed notification

Merge pull request cqerl#135 from matehat/new-status-codes

Updated Cassandra status codes

Bump version to 1.0.4

Bump version to 1.0.3

Fix client preparation bug occuring at startup

Merge pull request cqerl#106 from bvjebin/patch-1

Added new commit hash for snappy

Merge pull request cqerl#94 from matehat/v1.0-pre

v1.0 pre