titiler.core
- add custom JSONResponse using [simplejson](https://simplejson.readthedocs.io/en/latest/) to allow NaN/inf/-inf values (ref: https://github.com/developmentseed/titiler/pull/374)
- use `titiler.core.resources.responses.JSONResponse` as default response for `info`, `metadata`, `statistics` and `point` endpoints (ref: https://github.com/developmentseed/titiler/pull/374)
titiler.application
- switch to `starlette_cramjam` compression middleware (ref: https://github.com/developmentseed/titiler/issues/369)