Start working on gtf parser to extract unspliced gene sequences.
Added simple fasta reader, not feature complete yet.
Strand handling.
Add test inputs for gtftool.
Fully working gene sequence extraction for GENCODE GTF files.
Code cleanups.
Skip single-exon genes.
Support Ensembl gtf files with no explicit 'gene' entries by
finding the bounds from exon entries.
Support both gzipped and non-gzipped input files.
Code cleanups.
Makefile for Mac compilation.
Use ArgumentParser for cleaner command line interface.
Support ensembl fasta format output.
Fix Ensembl GTF input and output.
Fix includes.
Add fastagrep.sh from MMSEQ.
Add support for new Ensembl gtf files.
Add .gitignore.
Merge branch 'preproc_tools'
Adding new gtftool and fastagrep.sh
Sync Makefile.mac with Makefile.