Updated to support Defold 1.12.x

FIX: Updated to new API function to unpack libs and tools via bob

Unpack Lua files once on plugin creation

Avoid issues when running a multi threaded build.

Fix path issue when run from the editor

When running from the editor the extension was unable to find the prometheus.lua config file in the project root.

Defold 1.4.2+ fixes

This version has fixes which is needed for compatability with 1.4.2 and nothing related to the plugin functionality itself.
This version works only with Defold 1.4.2+

First release

1.0.0

Updated readme and added example