Add a Debian build configuration directory.
Add a changelog entry for libsiot 0.2.0.
Add a changelog entry for version 0.2.1.
Add a changelog entry for version 0.2.2.
Add a changelog entry for version 0.2.3.
Add a changelog entry for version 0.3.0.
Add a changelog entry for libsiot 0.3.1.
Add a changelog entry for version 0.4.0.