Changedetection.io

What's Changed
* GitHub container repo by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/227
* Setting for Extract <title> as title option on individual watches by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/229
* Re 232 - Use a copy of the datastore incase it changes by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/234
* Re 239 - Individual GUID for watch+changeevent by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/241
* Docker image build issues by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/243
* Re 242 - app was treating notification settings defaults as the value by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/244
* Configurable BASE_URL by dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/228


**Full Changelog**: https://github.com/dgtlmoon/changedetection.io/compare/0.39.1...0.39.2

Minor features update
Fix for possible notification failures

- Minor bug fixes
- UI cleanups
- "Tab" layout for settings
- "Triggers" option (wait for text or regex to appear 71 )
- WebDriver/chrome/javascript support

Re 172 - Fix cookie field in headers
Re 156 - PORT variable handler for Heroku and other platforms
Re 154 - Better handling of JSON inside HTML
Re 148 - Be sure that notification body is not empty which could break some notification systems

Various UI/responsive mobile fixes
Test improvements
Other small fixes

143 Notification box fix in global settings
135 Refactor adding a URL box
137 Fix headers in global settings

Other fixes
- Unset/remove password fix
- Misc UI fixes

Lots of nice features and bug fixes

- JSON Monitoring and Change Detection support, great for monitoring APIs!
- Document title in the <title>
- Customisable notifications
- Usability tweak - [edit] on diff page should go back to diff page
- Support for running in a sub-path under proxy_pass (Running changedetection.io behind a reverse proxy sub directory)
- Minor fixes
- Automatically deploy tagged version to docker hub