slavapestov/factor — pull request #883 by lorynj (2013-05-05 00:30:01+00:00)
Title: Tutorial update + Various convenience words

Updated the Tutorial documentation to clarify the file/directory structure of Factor's vocabularies.

Added a range of convenience words to a number of libraries:
kernel: /=
sequences: fifth
sequences.extras: trim-pos
math.combinators: when-negative / when-positive
math.statistics: cum-mean

Each addition comes with unit tests and documentation.