v0.3rc0

Features:

  - Implement borehole/hydraulics facilities; rework corresponding ORM
    relationships
  - Remove IO facilites from the ORM; should be rather implemented by
    the RAMSIS.io package

v0.2

Improvements:
  - Upgrade to geoalchemy2 v0.6.2

Corrections and fixes:
  - Create QuantityMixin *_value field with correct type

v0.2rc0

Completely refactored ORM datamodel facilities for the RT-RAMSIS core
infrastructure.

Improvements and features:
  - Refactored model structure; extensible for further types of
    ForecastStages/ Models
  - Removed deprecated/obsolete RT-RAMSIS core infrastructure
  - Introduce GIS facilities
  - Rudimentary tests both on PostGIS and on SpatiaLite
  - Generic QuakeML quantity types
  - Homogeneous naming conventions
  - Homogeneous coding and documentation style

Note, that an InjectionWell currently does not have snapshotting
facilities.