PMDA++ 0.2.0

Features:

• PM_TEXT_INDOM support (#3)
• unit tests (#12)

Bug fixes:

• pcp::instance_id_type is now unsigned (#11)
• pcp::metrics_description functors may segfault if not called in the correct
  order (f7da268)

PMDA++ 0.1.0

First official PMDA++ release.