fix bug validation

Merge pull request #84 from sadegh19b/master

fix undefined function in validator

fix date fromat

v1.11.5

fix format

fix datetime params

v1.11.4

fix datetime

fix datetime

v1.11.3

fix datetime

fix to datetime

v1.11.2

fix format datetime

fix bug timezone

fix bug timezone

compatible laravel 8

improve function creator
compatible laravel 8

fix bug add year and leap year

v1.10.7

fix leap year

fix bug constructor

v1.10.6

fix bug create datetime

fix bug php version

v1.10.5

accept persian number construct