Change-logs:

- Now you can draw static lighting using plugin command/ script, by provide it light type and positions. Currently you can't modify, or even change it status, but in exchange it allow you to draw hundreds, or even thousands of static lighting on the map! Note: MV Version blending mode is NORMAL instead of ADD for technical reason (PIXIJS), and I'm gonna patch it in the future if needed. 

- Added soft shadow customisation. Allow you to customize soft shadow status/strength/quality. The prefer strength/quality params is 2/1; 1/1; 1/2. All old previous version used 1/2.

- Added customizable color matrix filter to map, which allow you to higher the lights intensity and make lighting blend nicely into map. Currently only 'brightness' is visible in the plugin params, but you can use $shoraLayer.colorFilter to use all the other methods (see http://filters.pixijs.download/dev/demo/index.html)

- Change lighting registering phase. Now the new lighting type will be registered not only when you create a new game, but when the game boot up (Thanks to @Enigma_Productions).

- Fix a pretty serious memory leak when update from v1.4 to v1.5. Now it should work fine (test this by repeatingly switch between complex map).

- Fix some others minor bugs.

- Change all both demo's plugin command to use script call instead, for synchronizing easier. You can still use each's plugin commands normally.