Should the LTSV encoder be a separate package or be a part of the original package?

[hnakamur]

This package borrows a lot of code from the original package uber-go/zap: Fast, structured, leveled logging in Go..

If the LTSV encoder becomes a part of the original package and common functions are moved to the separate internal package, the code duplication can be avoided.

However the original author may not want to maintain the LTSV encoder which they probably does not use.