Modified PostgisTrait:     + performInsert() will no longer leave a newly created geometry field as an Expression type in a model's attributes     + getPostgisFields will now return non-associative postgisFields array and associative arrays the same so it is no longer necessary to specify geometry type       in a model. Note: cannot mix and match associative and non-associative in the same array.
Modified PostgisTrait:
    + performInsert() will no longer leave a newly created geometry field as an Expression type in a model's attributes
    + getPostgisFields will now return non-associative postgisFields array and associative arrays the same so it is no longer necessary to specify geometry type
      in a model. Note: cannot mix and match associative and non-associative in the same array.

njbarrett/laravel-postgis,rogue780/laravel-postgis,phaza/laravel-postgis