Update version to 0.1.2

gst-plugin-audiofx/Cargo.toml

 [package]
 name = "gst-plugin-audiofx"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 repository = "https://github.com/sdroege/gst-plugin-rs"
 license = "MIT/Apache-2.0"

gst-plugin-file/Cargo.toml

 [package]
 name = "gst-plugin-file"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 repository = "https://github.com/sdroege/gst-plugin-rs"
 license = "MIT/Apache-2.0"

gst-plugin-flv/Cargo.toml

 [package]
 name = "gst-plugin-flv"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 repository = "https://github.com/sdroege/gst-plugin-rs"
 license = "MIT/Apache-2.0"

gst-plugin-http/Cargo.toml

 [package]
 name = "gst-plugin-http"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 repository = "https://github.com/sdroege/gst-plugin-rs"
 license = "MIT/Apache-2.0"

gst-plugin-simple/Cargo.toml

 [package]
 name = "gst-plugin-simple"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 repository = "https://github.com/sdroege/gst-plugin-rs"
 license = "MIT/Apache-2.0"

gst-plugin-togglerecord/Cargo.toml

 [package]
 name = "gst-plugin-togglerecord"
-version = "0.1.0"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 license = "LGPL-2.1+"
 

gst-plugin/Cargo.toml

 [package]
 name = "gst-plugin"
-version = "0.1.1"
+version = "0.1.2"
 authors = ["Sebastian Dröge <sebastian@centricular.com>"]
 categories = ["multimedia"]
 description = "Infrastructure for writing GStreamer plugins in Rust"