Add isValidInteger & isValidFloat

• CheckHard.js becomes Checkard.js
• Add isValidInteger() method
• Add isValidFloat() method
• Fix isArray() method when len param is equal to zero
• Add more unit tests for isArray() method
• Improve isInteger() method

Add emptyCheck parameter to isObject()

• Add emptyCheck parameter to isObject() method. Which default to false

isStringOfLength()

• Add isStringOfLength() method

Add emptyCheck parameter to isString()

• Add emptyCheck parameter to isString() method. Which default to true

Add isJWT() method

• Add isJWT() method
• Improve isArray() method
• Update build tools
• Code cleanup for lighter library
• Add more unit tests

typeCheck parameter to isTimestamp() and isValidTimestamp()

• Add typeCheck parameter to isTimestamp() and isValidTimestamp() methods
• Improve types using "type predicates" for ease of use with Typescript

Fix isNumber with array of length 1

• Fix isNumber() & isTimestamp issue with array of length one
• Add more tests with arrays

Fix isTimestamp

• Fix isTimestamp() issue with string values

isArray() comparator

• isArray() method now checks if 'array' is an array and optionally if it is of length =, <, >, <= or >= than x

containsNumber() min max

• containsNumber() method now can take min and max parameters