inherit parse function from original Date

[frankdors]

Allow to use Date.parse

Date.parse('2020-01-18T15:30:00-03:00') = 1579372200000
Date.parse('2020-01-18T50:40:00-03:00') = NaN

Alternative fix at project code if(!Date.parse) Date.parse = Date.prototype.constructor.parse

[aralko]

Merge this please!