Update SpatialExpression.php

Merge pull request #3 from relocity/update-spatial-expression

Update SpatialExpression.php

Merge pull request #1 from relocity/update-dependencies

Update composer dependencies

Merge pull request grimzy#156 from grimzy/laravel-8-mysql-5.7

Support Laravel 8 / MySQL 5.7 (v5.0.0)

Merge pull request grimzy#148 from grimzy/v4

v4.0.0 (Laravel 8 / MySQL 8)

Merge pull request grimzy#119 from grimzy/srid

MySQL 8 SRID support

Merge pull request grimzy#128 from grimzy/issue-58-fix-retrieving-emp…

…ty-geometry-collection

Fix issue where the WKB of empty GeometryCollections was not getting parsed