build : 0.32.1

* update pubspec,readme,changelog

build : 0.32.0

* update pubspec,readme,changelog

build : 0.31.0

* update pubspec version
* update changelog,readme

build : 0.30.1+2

* fix indexOutOfBOunds when adding RoadOverlay in the map
* update pubspec,readme,changelog

build : 0.30.1+1

* fix  version in readme

build : 0.30.1

* update version in pubspec
* change changelog,readme

build: 0.30.0

* update pubspec version

build : 0.29.1+3

* fix docs

build : 0.29.1+2

* fix bug when initialise map and isPicker true for iOS platform
* update version in pubspec
* update readme,changelog

build : 0.29.1+1

* fix check permission for iOS platform
* update version in pubspec
* update readme,changelog