Tag 1.0.0-rc2 release.

Zcash v1.0.0-rc1 release

Zcash v1.0.0-beta2

This version contains a number of audit mitigations, reliability improvements
and bug fixes. It also updates the address prefixes to the new two-byte format.

For an overview of the release, see the blog post:
https://z.cash/blog/new-beta-release-audit-mitigations-and-bug-fixes.html

For complete changes, see doc/release-notes/release-notes-1.0.0-beta2.md

1.0.0-beta1 release.

Zcash v0.11.2.z9

This version fixes a network protocol bug that prevented many users from
connecting to the z8 test network. It also solidifies the consensus protocol; we
do not expect to make any other changes to the consensus protocol, except for
possible security fixes, until after 1.0.

For an overview of the release, see the blog post:
https://z.cash/blog/new-alpha-release-solidifying-the-consensus-protocol.html

For complete changes, see doc/release-notes/release-notes-0.11.2.z9.md

Release process for z8. Issue zcash#1140.

z7 Release

z6 Release

Change the network magic numbers.

v0.11.2.z4 release.