Added option to skip Ns in CIGAR strings, which occur in RNA-seq data.
Ensure target region is string before checking if file when handling multiple region input settings for FreeBayes. #166
Provide more conservative memory usage: scale cores to lower value relative to available memory and provide additional system, non process, memory buffer
Avoid overuse of cores and memory when specifications are beyond system capabilities
Ensure system memory information passed more precisely to handle slurm strictness