Fugassem

* Added option for prediction using universal GO set
* Added option for prediction using global GO set
* Added option for predicting terms from all GO ontologies
* Refined generate_annotation_input module to prepare co-homology evidence
* Added function for visualization
* Fixed issue on processing fugassem_stratified_abundance module
* Added example data

* Fixed small issue from geneontology.py
* Added function for detailed annotation when '--go-level none'
* Tweaked stratified_abundance.py for accepting compressed input files
* Added format_function module for formatting input file
* Fixed issue when using different zero-filtering approach

* Accepted input matrix evidence with connection weights
* Added options to accept either pair- or unpair-based matrix evidence

* Fixed issues of utilities for preparing input files
* Added option for skipping to integrate mtx into finalized prediction

* Added multi-tasking module for processing taxa in parallel

* Added parameters for taking vector-based and matrix-based evidence files