- flatten std.crypto.hash.Sha1 and give it a writable interface that
optimizes splats
- flatten std.hash.crc and give it a writable interface that optimizes
splats
- remove old writer impls from std.crypto
- add fs.File.Writer.moveToReader
- add fs.File.Writer.seekTo
- add std.io.Reader.Hashed and std.io.Writer.Hashed which are
passthrough streams. Instead of passing through to null writer, use
the writable interface implemented directly on hashers which doesn't
have to account for passing through the data.
- add std.io.BufferedWriter.writeSplatAll
