mysql-native v2.0.0-rc2

[Nick Sabalausky (Abscissa) via Digitalmars-d-announce]

Second release candidate: Tagged v2.0.0-rc2

Changes since RC1 listed in changelog:
https://github.com/mysql-d/mysql-native/blob/master/CHANGELOG.md

These changes are needed to help prepare for the eventual v2.1.0