Bump buffer-alloc to 1.2.0 and to-buffer to 1.1.1

[jake-low]

I've been seeing warnings for a while when using the Yarn package manager about the Buffer constructor API being deprecated in favor of Buffer.from and Buffer.alloc.

Yarn depends on tar-stream, and two of tar-stream's dependencies use new Buffer, but happily newer versions of both those dependencies exist that check if the appropriate new API is available and use that instead.

• buffer-alloc 1.2.0 bumps its dependency on buffer-fill to 1.0.0, which includes a new check for Buffer.alloc
• to-buffer 1.1.1 checks for Buffer.from and uses it if it's available. Also I just realized to-buffer is also your project so you knew that already 🙂

I ran the tar-stream tests on my machine, and they passed. After that I used yarn link to pull my modified version of tar-stream into my local copy of Yarn, and found that this fixed the deprecation warnings. So once you merge this PR and release a new version of tar-stream, I'll make a PR to Yarn to bump the tar-stream version there, and that should make the message go away for Yarn users.

Cheers!
-Jake

[mafintosh]

1.6.2