Add git lp rebase command

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Add Vagrant file for testing on older Ubuntu releases

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Bump version to 0.2

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Merge branch 'release/0.2' into develop