if manifest.json is missing "dependencies" then HA startup Hangs

[asantaga]

Home Assistant release with the issue:
0.93.2

Last working Home Assistant release (if known):

Operating environment (Hass.io/Docker/Windows/etc.):
Linux Ubuntu 18.04

Component/platform:
All , was tested with custom

Description of problem:
If you miss out the dependancies section in a component/integrtions manifest.json then HA startup will hang without any error indicating what the error.

Last three lines of log file

2019-06-02 23:21:23 DEBUG (Recorder) [homeassistant.components.recorder] Connected to recorder database
2019-06-02 23:21:23 INFO (MainThread) [homeassistant.setup] Setup of domain recorder took 0.2 seconds.
2019-06-02 23:21:23 DEBUG (MainThread) [homeassistant.core] Bus:Handling <Event component_loaded[L]: component=recorder>

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):
My sample configuration YAML is for a component im developing, the relevant section is

wiser:
  host: 192.168.0.29
  password: XXXXXXXXXXXX
  scan_interval: 300
  boost_temp: 25
  boost_time: 30

Sample manifest.json which DOES NOT work and hangs is

{
  "domain": "wiser",
  "name": "Wiser Heating Component ",
  "documentation": "https://www.example.com",
  "codeowners": ["@asantaga"],
  "requirements": ["wiser-heating-api>=1.0.0"]
}

Traceback (if applicable):

Additional information:

[stale]

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