v2.1.0

• Implemented more efficient algorithms for the search and extraction of pre-specified skipgrams and flexgrams (issue #9)
• Added colibri-findpatterns script (issue #9)
• Documentation and Python tutorial updated with a section on finding pre-specified patterns
• Better flexgram support
• Patternmodeller tool now as long options for everything to avoid confusion
• Fixed getskipcontent (issue #10)
• Minor fixes and improvements for Cython/Python