Fixes and Functionality:
- Updating axios requests to be delayed by pre-emptive promise creation (#2702)
- Adding "synchronous" and "runWhen" options to interceptors api (#2702)
- Updating of transformResponse (#3377)
- Adding ability to omit User-Agent header (#3703)
- Adding multiple JSON improvements (#3688, #3763)
- Fixing quadratic runtime and extra memory usage when setting a maxContentLength (#3738)
- Adding parseInt to config.timeout (#3781)
- Adding custom return type support to interceptor (#3783)
- Adding security fix for ReDoS vulnerability (#3980)
Internal and Tests:
- Updating build dev dependancies (#3401)
- Fixing builds running on Travis CI (#3538)
- Updating follow rediect version (#3694, #3771)
- Updating karma sauce launcher to fix failing sauce tests (#3712, #3717)
- Updating content-type header for application/json to not contain charset field, according do RFC 8259 (#2154)
- Fixing tests by bumping karma-sauce-launcher version (#3813)
- Changing testing process from Travis CI to GitHub Actions (#3938)