Added label_format option for trailing label and number
Better drawing of label and last graph value
Bundled Silkscreen font from kottke.org for possible labels in the future.
Add test for smooth with constant data and target
Signed-off-by: Geoffrey Grosenbach <email@example.com>
Tests for min/max.
New tests for nil data.
Test case for disabled last.
Handle case where all data is zero
First import from Subversion