sv-1.0: changelog.md

# Revision history for sv

## 1.0 -- 2018-07-19
* Split the package into sv, sv-core, svfactor. This removes Data.Sv.{Parse,Print,Syntax}
  and changes types in Data.Sv.Decode and Data.Sv.Encode.
  Compatibility with version 0.1 is minimal

## 0.1 -- 2018-03-06

* First version. Released on an unsuspecting world.