Set pre-release version

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup: fix path prefixing if it already starts with sys.prefix

Previously, non-user installation got broken because of repeated
sys.prefix (one for sys.prefx == install_base and for the original).

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
setup: fix console_scripts entrypoint: use actual argv handler

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Bump version to 0.2.2

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