+ test range(array) option of iterator
+ AlreadyRunError to abstract-error
- remove the iterator range test to range-test.js
add more iterator range test
+ mGet/mGetSync to get multi keys
* mGet same to js
* using mGet for iterator range(array) option
* delete the resultOfKeys field from iterator after end().
* [bug] typo on _mGetSync
* minor changed: just change code order
* update readme
* update version to 1.7.0