bump patch version

ryankurte · web-flow · commit 701a07e7b340 · 2019-05-29T13:20:29.000+12:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "i2cdev"
-version = "0.4.1"
+version = "0.4.2"
 authors = ["Paul Osborne <osbpau@gmail.com>"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rust-embedded/rust-i2cdev"
