Springtime release

A revision of the installation guide and the examples will make it easier for new users to enter the world of oemof.

Some developments:

• New transformer classes
  • Transformer with multiple inputs
  • Transformer with a variable fraction between its outputs
• New slicing functions to make it easier to handle extensive results
• Code clean up
• Speed up the constraint building process

See the whatsnew section for more details.

If you want to talk to other oemof users, join our first user meeting.