0.0.2

• support centered axes
• support dynamic labels
• support label configurations
• add label dimension for showing customized text in label
• add minRadius option
• support data range conversion (including Linear Scale, Percentile Rank and Log Scale)
• use charts.utils.format instead of d3.format
• fix trend line rendering issue
• add align-range config, which makes x-axis and y-axis use the same value range.
• add grid lines