Security Fix, withlock action, flags, graphql alter query, rest command/run endpoint

Security Fix: This release has an important security fix described in #49. It is recommended everyone upgrade, although it is unlikely the vulnerability can be exploited for most SolarThing set ups.

All

• millisNull view is (in automation program and in graphql program)
  Actions
• Added a withlock action, which is recommended whenever you are dealing with an action that should never parallel itself.
  • As of right now, many actions that using locks in config_templates have bugs in them that cause them to unlock even when there's already a lock on them
• log action can send to the summary log if desired
• Flags are a new feature that can be set using an authorized client (currently only slack chat bots). Flags can be utilized in actions for checking if boolean configuration values are set/unset.
• New heartbeat packets. This is a good way to make sure commands stay working. You can set up alerts with the message-sender action part of the automation program

GraphQL/REST Program

• New GraphQL queries for alter database related stuff
• /commend/run endpoint for executing actions. An API key is required. You can make your own API keys and put them in the configuration
  • This feature is undocumented as of now. I hope to add documentation for it in the future.
  • This feature sets CORs headers that allow it to be called from a browser.