- Addressed bug #804 by allowing rc.hyphenate to control whether hyphens are
inserted when long lines are broken. This may help prevent xterm from
mis-parsing URLs in task annotations, when wrapped (thanks to Yann Davin).
- Added unit tests.
- Refactored column objects to contain a ::validate method, for the
validation of incoming data.
- Context.columns is now a vector of one of each column object,
indexed by attribute name, for validation purposes.
