RTL tweaks
Remov some unnecessary greying out fo certain sections of stack traces
Log some more delicious constants
New plugin URI
Re-implement QM output on the login screen which went missing
Reorder the logic in `QM_Backtrace::get_component()` to give preference to calculating the component from the class or function rather than the file.
Ignore an extra backtrace item from within `QueryMonitorDB`.
Handle filters on `pre_http_request` which return a `WP_Error`.
Add some more `WP_PROXY_*` constants, and always display them if they're defined
Merge branch 'rtl' into develop
Readme update
Remove unused variable
Mark as 2.6.8