rseq package:wai-extra

Only to be used on header's values which support quality value syntax A few things to keep in mind when using this function: * The resulting Int will be anywhere from 1000 to 0 ("1" = 1000, "0.6" = 600, "0.025" = 25) * The absence of a Q value will result in 'Just 1000' * A bad parse of the Q value will result in a Nothing, e.g. * Q value has more than 3 digits behind the dot * Q value is missing * Q value is higher than 1 * Q value is not a number