Handle empty files without errors

1.1.3

fix https://github.com/defold/extension-lua-preprocessor/issues/7

Plugin update

Including the new logging fix from 1.1.1

Logging fix

Merge pull request #6 from defold/fix-missing-bob-verbose

Fix for using missing functionality in bob

Throw error if syntax is wrong

Make sure that plugin throws an exception and provide debug info to make sure developer doesn't miss some unexpected behavior because of typos.

Basic Lua preprocessor

This is the first release of the Lua preprocessor for Defold.
The following syntax supports:

-- Use one of the following keywords: RELEASE, DEBUG or HEADLESS
--#IF RELEASE
 my_lua.code_for_release()
--#ELSE
 my_lua.code_for_debug()
--#ENDIF