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dash-docs/_releases/2013-12-09-v0.8.6.md
David A. Harding cbebe461ff Releases: Variablize Release Notes 
Add additional variables to the release note files to allow setting the
version number and date.  The version number is required, and can be
used to automatically set the release notes title.  The date is optional
and can be set hours/days after the release.

Additionally, a Makefile test is added that checks whether the download
files exist on the Bitcoin.org server.  This can help prevent creating a
broken Download page.

* Set variables for all previous releases

* Document variables in README.md

* Update code and templates to use variables

* Add the Download page links to the "dl" CSS class. Also add newlines
  to make the HTML a bit easier to parse using sed

* Add a new Liquid plugin to print warnings. This is used to print a
  non-error warning if any release is created without the optional date
2015-02-27 08:15:50 -05:00

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required_version optional_date optional_title
0.8.6 2013-12-09 Bitcoin-Qt version 0.8.6 released

Bitcoin-Qt version 0.8.6 is now available from: http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.6/

This is a maintenance release to fix a critical bug; we urge all users to upgrade.

Please report bugs using the issue tracker at github: https://github.com/bitcoin/bitcoin/issues

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/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

If you are upgrading from version 0.7.2 or earlier, the first time you run 0.8.6 your blockchain files will be re-indexed, which will take anywhere from 30 minutes to several hours, depending on the speed of your machine.

0.8.6 Release notes

  • Default block size increase for miners. (see https://gist.github.com/gavinandresen/7670433#086-accept-into-block)

  • Remove the all-outputs-must-be-greater-than-CENT-to-qualify-as-free rule for relaying (see https://gist.github.com/gavinandresen/7670433#086-relaying)

  • Lower maximum size for free transaction creation (see https://gist.github.com/gavinandresen/7670433#086-wallet)

  • OSX block chain database corruption fixes

    • Update leveldb to 1.13
    • Use fcntl with F_FULLSYNC instead of fsync on OSX
    • Use native Darwin memory barriers
    • Replace use of mmap in leveldb for improved reliability (only on OSX)

  • Fix nodes forwarding transactions with empty vins and getting banned

  • Network code performance and robustness improvements

  • Additional debug.log logging for diagnosis of network problems, log timestamps by default

  • Fix Bitcoin-Qt startup crash when clicking dock icon on OSX

  • Fix memory leaks in CKey::SetCompactSignature() and Key::SignCompact()

  • Fix rare GUI crash on send

  • Various small GUI, documentation and build fixes

Warning

  • There have been frequent reports of users running out of virtual memory on 32-bit systems during the initial sync. Hence it is recommended to use a 64-bit executable if possible. A 64-bit executable for Windows is planned for 0.9.