v1.2.0

Feature

• Allow to use user defined functions (cf3fabe)

Fix

• Docker push (ad83014)
• Exception management for templates with missing aql paths (8b44549)
• Generate skeleton now produces a valid yaml, closes #46 (880f388)

Documentation

• Add installation from pip, move sections around. [skip ci] (b6410f9)
• Add description, [skip ci] (82475f8)
• Use raw github url for images in README.md (so they are visible in pypi) (59838f4)