An update for Blue Pencil is now available.
Version 1.52 includes the first release of the powerful new Transform Tool. The transform tool allows users to translate, rotate and scale a selected region of a drawing and provides additional functionality to cut, copy and paste selections between drawings and layers.
Other new features include the ability to resize the brush diameter by holding down the 'B' key and LMB dragging in the viewport. And, for users who do not use auto-key, there is a new option to paint to the previous key if a key does not exist at the current time.
See the release notes for full details.