v4.0.11

• Optimize toStringDate the number type parameter.

v4.0.10

• add getDayOfQuarter function.
• fix getWhatQuarter error in calculating the number of "last" days.
• optimize getWhatWeek supporting parameter: offsetDay = "first" | "last" | 0-6.

v4.0.9

• fix toFixed and round rounding for negative numbers. #47

v4.0.8

• update ts types.

v4.0.7

• optimize.

v4.0.6

• toArrayTree support the parameter rootParentValue, rootValues to set the root node.

v4.0.5

• fix toArrayTree The conversion exception issue when the key and parentKey values are the keywords 'null' or 'undefined'. #80

v4.0.4

• fix merge object reference error. #79

v4.0.3

• fix umd url

v4.0.2

• fix export * error #78