Bump to version v0.12

Changelog:
 * iio_attr: Add support for buffer attribtues
 * iio_info: Add support for buffer attributes
 * iiod: Add support for buffer attributes
 * device: Add support for buffer attributes
 * local: Track buffer attributes
 * iiod: usbd: initialize the SuperSpeed Endpoint Companion descriptors
 * travis-ci: fix typo in matrix
 * CMake: quote arguments for STREQUAL
 * examples/ad9371-iiostream.c: Add AD9371/5 IIO Streaming example
 * local: Track requested and allocated number of blocks independently
 * local: Return error when no blocks could be allocated
 * Cmake: If the version of libserialport isn't 0.1.1; don't fail, just    warn, and continue building without it. This makes it easier    for those (Ubuntu 16 LTS), who are using distributions that     don't keep up to date.
 * Update channel type and modifier lists
 * iiod: fix crash setting buffers on invalid device
 * appveyor.yml: Move all the MSVC and MinGW builds into a single ZIP artifact.
 * travis-ci: Allow before_deploy to be run twice, which is what happens   on a release/tag, without erroring
 * travis-ci: Deploy OS-X files on releases
 * appveyor.yml: Create MinGW builds for Windows 32 bit and 64 bit.

Signed-off-by: Michael Hennerich <[email protected]>

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 2.8.7)
 project(libiio C)
 
 set(LIBIIO_VERSION_MAJOR 0)
-set(LIBIIO_VERSION_MINOR 11)
+set(LIBIIO_VERSION_MINOR 12)
 set(VERSION "${LIBIIO_VERSION_MAJOR}.${LIBIIO_VERSION_MINOR}")
 
 # Set the default install path to /usr