hide option for custom total value in donut charts if dataset has more than one row
initial treemap commit
added function stub for parsing trees
first rudimentary treemap
removed treemap from datawrapper core (moving to separate module repo soon)
changed 'color-by-row' to generic 'color-by' + allowing for coloring of hierarchical datasets
dataset now supports parsing of hierarchical structures
refactored legend creation to raphael-chart
font-size should be applied to .label, not .label span!
font-size on .label, not .label span
version --> 1.2.7
removed d3.treemap, (now lives in separate repo)