Merge pull request #516 from RavenProject/mney_2.2.2_release_notes

Adding release notes for v2.2.2 release

doc/release-notes/release-notes-2.2.2.md

@@ -0,0 +1,98 @@
+Raven Core version *2.2.2* is now available!!
+==============
+
+  <https://github.com/RavenProject/Ravencoin/releases/tag/v2.2.2>
+
+
+This is a major release containing bug fixes and enhancements for 2.2.0/2.2.1.  It is highly recommended that users 
+upgrade to this version.
+
+Please report bugs using the issue tracker at GitHub:
+
+  <https://github.com/RavenProject/Ravencoin/issues>
+
+To receive security and update notifications, please subscribe to:
+
+  <https://ravencoin.org/en/list/announcements/join/>
+
+How to Upgrade
+==============
+
+If you are running an older version, shut it down. Wait until it has completely
+shut down (which might take a few minutes for older versions), then run the 
+installer (on Windows) or just copy over `/Applications/Raven-Qt` (on Mac)
+or `ravend`/`raven-qt` (on Linux).
+
+The first time you run version 2.1.0 or higher, your chainstate database may
+be converted to a new format, which will take anywhere from a few minutes to
+half an hour, depending on the speed of your machine.
+
+Downgrading warning
+==============
+
+If you are upgrading to 2.2.2 from a version before 2.1.0 the chainstate database for this release is 
+not compatible.  If you run 2.1.0 or newer and then decide to switch back to any
+older version, you will need to run the old release with the `-reindex-chainstate`
+option to rebuild the chainstate data structures in the old format.
+
+If your node has pruning enabled, this will entail re-downloading and
+processing the entire blockchain.
+
+It is not recommended that users downgrade their version.  Version 2.1.0 and later contain
+changes that *will* fork the chain, users not running 2.1.0 (or later) will be not
+be able to participate in this fork process and will be left on the old chain which 
+will not be valid.
+
+Note: There are no consensus-rule changes between versions 2.1.0 and 2.2.2 - running versions in this range
+will not fork the chain. 
+
+Compatibility
+==============
+
+Raven Core is extensively tested on multiple operating systems using
+the Linux kernel, macOS 10.8+, and Windows 10(x64) and later. 32-bit versions of Windows,
+and Windows XP are not supported.
+
+Raven Core should also work on most other Unix-like systems but is not
+frequently tested on them.
+
+Raven Core has been tested with macOS 10.14 Mojave, but it is recommended that *developers*
+do not update to Mojave.  There is an incompatibility with Berkeley-db 4.8.30 that causes
+the binaries to seg-fault.  There is a workaround, but as of this release users should
+not update to Mojave (see build-OSX.md for current status of this issue).  There are no
+known issues running the release binaries on Mojave.
+
+Notable changes
+==============
+*This list includes changes from all releases between 2.1.0 and 2.2.2*
+- Reduction in memory usage
+- Chain synchronization speed
+- New QT interface
+- QT dark mode (not using OSX Mojave dark mode)
+- Chain split attack vector fix
+- Better asset caching
+- Enhancements for Ravencoin Dev Kit and Mobile Wallet Support
+- Limit listaddressesbyasset RPC call to only return 5,000 asset-addresses per call
+- Updates and fixes to the functional and unit tests for better asset coverage and stability
+
+
+2.2.2 Change log
+==============
+
+Changelog available here: <https://github.com/RavenProject/Ravencoin/commits/release_2.2.2>
+
+Credits
+==============
+
+Thanks to everyone who directly contributed to this release:
+
+- Most importantly - The Raven Community!
+- Tron Black
+- Jesse Empey
+- Jeremy Anderson
+- Corbin Fox
+- Daben Steele
+- Cade Call
+- @Roshii
+- @underdarkskies
+- Mark Ney