2021-01-26, Version 15.7.0 (Current)

PR-URL: https://github.com/nodejs/node/pull/37020

Notable changes:

* buffer:
  * introduce Blob (James M Snell) [#36811](https://github.com/nodejs/node/pull/36811)
  * add base64url encoding option (Filip Skokan) [#36952](https://github.com/nodejs/node/pull/36952)
* doc:
  * add @iansu to collaborators (Ian Sutherland) [#36951](https://github.com/nodejs/node/pull/36951)
  * add @RaisinTen to collaborators (Darshan Sen) [#36998](https://github.com/nodejs/node/pull/36998)
  * add @miladfarca to collaborators (Milad Fa) [#36934](https://github.com/nodejs/node/pull/36934)
* fs:
  * allow position parameter to be a BigInt in read and readSync (raisinten) [#36190](https://github.com/nodejs/node/pull/36190)
* http:
  * attach request as res.req (Ian Storm Taylor) [#36505](https://github.com/nodejs/node/pull/36505)
  * expose urlToHttpOptions utility (Yongsheng Zhang) [#35960](https://github.com/nodejs/node/pull/35960)