### Changed
- When shutdown hook is executed we disable all tracing to avoid creating unnecessary spans #361
- Inside request init hook we disable all function tracing when we decide not to trace #361
### Added
- Disable request_init_hook functionality in presence of blacklisted modules via `ddtrace.internal_blacklisted_modules_list=some_module,some_other_module` #345 & #370
- Integration-level configuration #354
- `dd_trace_disable_in_request` function which disables all function tracing until request ends #361
### Fixed
- Symfony template rendering spans #359
- Laravel integration user ID errors #363
- Non-success HTTP response codes aren't properly categorized as errors in the APM UI #366