glical.0.0.1: a library to glance at iCalendar data

Glical is a tiny library that does the minimal necessary parsing
work for iCalendar data. The library provides an extensible data
structure to allow multiple structure transformations for iCalendar
data.
Merge pull request #1725 from pw374/master

glical.0.0.1: a library to glance at iCalendar data