6.1.0
fix(progressive): (1) Fix that candlestick large data progressive rendering was broken by Doji feature. (2) Fix bar large and progressive might throw NPE. (3) Follow the fixing of progressive rendering in zrender#1151 (3) Fix parallels did not clear previous rendered content when switching between progressive and normal mode. (4) Fix that chart.on('finished') event might not be called in some edge case (when multiple iterations are executed in one frame at the end).
test regression: fix recent broken.
fix: not install directly to avoid installed twice.
refact: use 'style' in visual instead of separate color, opacity. bug fixes on state management.