mint v0.2.0

• Simplify project setup by adding parameters to init.R.
• Split methylSig analysis by chromosome to deal with memory issues for large WGBS runs (we will return to this solution in a future release).
• Implement simple classification for pulldown_compare.
• Refactor annotatr related code. Currently works with annotatr v0.99.5 and annotatr.data v0.99.4.
• Turn off random regions for cases where it is too computationally cumbersome.
• Remove *_align rules as prereqs for *_compare rules.
• Add intron/exon boundaries to default annotatr analyses.
• Changed default bowtie2 run parameters to include --no-unal.