Merge pull request #22 from ghuls/fix_read

Fix "read" feature.

bigtools/Cargo.toml

@@ -81,5 +81,5 @@ required-features = ["cli"]
 default = ["remote", "read", "write", "cli"]
 remote = ["attohttpc", "tempfile"]
 cli = ["clap", "ryu", "ufmt", "read", "write"]
-read = ["bytes"]
+read = ["bytes", "itertools"]
 write = ["crossbeam-channel", "tempfile", "futures", "serde", "itertools", "bincode"]