Release v1.1.4

Add backslash support

Release v1.1.3

Add support for character echoing and post command callback.

Release v1.1.2

This release contains:

• Fix serial startup for ESP8266
• Update Travis-CI
• Update copyright headers
• Remove CMake

Release v1.1.1

• Rename examples
• Move Doxygen documentation to separate gh-pages branch
• Fix library.properties
• Register library on PlatformIO

Release v1.1.0

• Rename library sources to prevent conflicts with other Arduino libraries.
• Move docs directory to gh-branch.
• Add Travis auto-build scripts.
• Add PlatformIO support.
• Add documentation.

Release v1.0.0

Initial release.