Opened Doors Don’t Block Light
An update of Mlph’s Mod:
Opened Doors Don’t Block Light 

Light can pass through the opened doors.
This mod uses Harmony.
This has been updated for 1.6 and uses the games built in lighting system, so it shouldn’t be nearly as detrimental to the performance anymore.
It can be added to existing save data.
Removing this mod outputs error, but it seems no problems.
NOTICE
As This mod does frequent lighting update(a update per 5 ticks(1/12 second)), it may cause lag in some condition.