Modified pmf and cdf for truncated logseries, so that when p<1 the values can be computed using scipy.stats.logser, which is faster than adding the values up from scratch.
Modified pmf and cdf for truncated logseries, so that when p<1 the values can be computed using scipy.stats.logser, which is faster than adding the values up from scratch.

davharris/macroecotools,weecology/macroecotools,rueuntal/macroecotools,weecology/macroecotools,rueuntal/macroecotools