Just tried adding a vesync switch to my setup running 0.99.2 and I am getting
Error while setting up platform vesync
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 148, in _async_setup_platform
task = async_create_setup_task()
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 104, in async_create_setup_task
platform.setup_platform,
AttributeError: module 'homeassistant.components.vesync.switch' has no attribute 'setup_platform'
Vesync worked previously for me - but I had removed it for a bit and just try re-adding it today.