Fastqp

This release refactors the main function so that it's callable from another Python script.

- Added option to specify file type when extensions are uninformative (9f817b0)
- Removed header line from text output (c4eba85)

- matches adapter kmers (11)
- uses mdshw5/simplesam for SAM/BAM IO (10)
- identifies outlier kmers by linear regression (9)
- calculates observed/expected ratio for kmers (8)

Removed methylation-specific QC metrics. Using `simplesam` module for SAM/BAM access. Statistics are now reported in a tidy table format.