master
Add license header comment on each source file
Back compat.
test: Add visual test marks for v6.1.0.
Tweak mktest.
fix regression: (1) User specified `interval` show be backward compatible. (2) Default IntervalScale extent on single data item case show not be broken. (3) LogScale filter non-positive value.
test: Add test util for canvas layer debug.
'scale' to ts