Set pre-release version

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup: make sure to include ext-plugins/lib-{ccs,pcs}

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup: setuptools' install -> implicit use of install_scripts

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup: override install, set single_version_externally_managed

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup: reorder imports (conventions)

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
__init__: fix installation from a raw archive

Caused by a thinko in reasoning about paths relationships.

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Bump version to 0.2.4

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>