Bumped to 0.2.3 for changes

Only breaks cached data, so not doing anything to the minor version.
Should add some commands to delete cached data if it causes an error
    on reading. Namely the cached matrix data as we can tell if thats
    corrupt thanks to the compression. Image data can be corrupted and
    we wouldn't really know. ;(

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pihash"
-version = "0.2.2"
+version = "0.2.3"
 authors = ["Drew Short <warrick@sothr.com>"]
 description = "A simple library for generating perceptual hashes for images and comparing images based on their perceptual hashes."
 repository = "https://github.com/warricksothr/Perceptual-Image-Hashing/"