api change in blender 2.8

[shivanimall]

https://github.com/ztzhang/SoundSynth/blob/master/online_synth/render/blender_render_scene.py#L171
throws error: AttributeError: 'BlendData' object has no attribute 'lamps'

https://github.com/ztzhang/SoundSynth/blob/master/online_synth/render/blender_render_scene.py#L174
throws error

here is the issue:
nortikin/sverchok#2742