Auto commit for npm publish version 0.1.3-0 [ci skip]

Fix bug when .set() on null or undefined

update depdency, support empty path for .each() and .forIn()

fix doc

prevent error when input is number or null or undefined then .each(),…

… .forIn()

prevent error when input is number or null or undefined

support .range() , .find() , .findLast()

support .concat() , keep original when no return value in .each() or …

….forIn() callback

support failback callback for .each() and .forIn(). support .copy()

support move() and del()