Scout-apm

Added
- Split CI tests GitHub actions into two jobs to support python 3.4 on
Ubuntu 18 and modern versions with Ubuntu 20.
- Run CI tests once per day to identify issues quicker.
- Set Scout core agent default version to v1.4.0.
([Issue 700](https://github.com/scoutapp/scout_apm_python/issues/700))
- Instrument Flask for Error Monitoring.

Fixed
- Properly handle querystring parameters in error monitoring service by
passing them as a list of tuples rather than a dictionary. When there
were multiple params with the same key, it was keeping the last value.

Added
- Added support for Django 4.0 and Python 3.10.

Fixed
- Make `module_filepath` more robust avoiding throwing exceptions.
([Issue 691](https://github.com/scoutapp/scout_apm_python/issues/691))

Added
- Reverted - Rework release Github action to utilize newer versions of cibuildwheel when available.

Added
- Rework release Github action to utilize newer versions of cibuildwheel when available.
- Added `search_mvt` instrumentation for ElasticSearch 7.15.0.
- Default core agent version to v1.3.1. Support ARM64 core agent architecture.
([Issue 683](https://github.com/scoutapp/scout_apm_python/issues/683))

Added
- Convert objtrace to use PEP 489 multi-phase initialization.
([Issue 661](https://github.com/scoutapp/scout_apm_python/issues/661))
- Enable error monitoring by default.

Fixed
- Disconnect receiver from celery task_failure signal.
([Issue 678](https://github.com/scoutapp/scout_apm_python/issues/678))

Added
- Prevent a TrackedRequest from being sent more than once. Additional
logging was added to identify cases when this is occurring.

Fixed
- Define TrackedRequest ContextVar at module level and ignore tokens.
([Issue 675](https://github.com/scoutapp/scout_apm_python/issues/675))