Increased version to 0.3.dev1 after release of 0.2.

(commit by unleash 0.5)
Fixed bug (missing default value of ---wrapper).
Increased version to 0.3.dev1 after release of 0.2.1.

(commit by unleash 0.5)
Fixed typo.
Increased version to 0.3.dev1 after release of 0.2.2.

(commit by unleash 0.5)