v1.0.10 - fixes for a few issues

This version fixes a few smaller issues that people ran into over past month,

• A workaround for GMS1/GMS2 bug with extensions sometimes failing to initialize in debug mode is now included in asset's sample obj_gmlive (it's the variable_global_exists line).
• Fixed `with (instance) instance_destroy()` sometimes destroying the instance outside the with-block.