0.8.0-dev doesn't save hparams.yaml
🐛 Bug
I install pytorch-lightning from master, version 0.8.0-dev, new version doesn't save arguments in hparams.yaml. old version 0.7.6 can save it correctly
Environment

PyTorch Version (e.g., 1.0): 1.5
OS (e.g., Linux): Linux
How you installed PyTorch (conda, pip, source): source
Build command you used (if compiling from source):
Python version:
CUDA/cuDNN version:
GPU models and configuration:
Any other relevant information: