Version 1.0.1

add new functionality to HdfMap object:

• ii = HdfMap.create_interpreter() - create interpreter object that will evaluate strings and load data
• HdfMap.add_roi(...) - wrapper to easily add region of interest to named expressions.

What's Changed

• Add ast interpreter option by @DanPorter in #30

Full Changelog: v1.0.0...v1.0.1