Write-side counterpart to PbjReader: fixed-width/varint(+zigzag) writes, plus a placeholder/patch mechanism for filling in length prefixes after writing content, avoiding a two-pass encode for short strings.
Benefit: same buffer-reuse win as PbjReader, applied to writes.
PR: #909
Write-side counterpart to PbjReader: fixed-width/varint(+zigzag) writes, plus a placeholder/patch mechanism for filling in length prefixes after writing content, avoiding a two-pass encode for short strings.
Benefit: same buffer-reuse win as PbjReader, applied to writes.
PR: #909