add news item for git-annex 0.22

doc/news/version_0.17.mdwn

@@ -1,7 +0,0 @@
-git-annex 0.17 released with [[!toggle text="these changes"]]
-[[!toggleable text="""
-   * unannex: Now skips files whose content is not present, rather than
-     it being an error.
-   * New migrate subcommand can be used to switch files to using a different
-     backend, safely and with no duplication of content.
-   * bugfix: Fix crash caused by empty key name. (Thanks Henrik for reporting.)"""]]

doc/news/version_0.22.mdwn

@@ -0,0 +1,24 @@
+git-annex 0.22 released with [[!toggle text="these changes"]]
+[[!toggleable text="""
+   * Git annexes can now be attached to bare git repositories.
+     (Both the local and remote host must have this version of git-annex
+     installed for it to work.)
+   * Support filenames that start with a dash; when such a file is passed
+     to a utility it will be escaped to avoid it being interpreted as an
+     option. (I went a little overboard and got the type checker involved
+     in this, so such files are rather comprehensively supported now.)
+   * New backends: SHA512 SHA384 SHA256 SHA224
+     (Supported on systems where corresponding shaNsum commands are available.)
+   * describe: New subcommand that can set or change the description of
+     a repository.
+   * Fix test suite to reap zombies.
+     (Zombies can be particularly annoying on OSX; thanks to Jimmy Tang
+     for his help eliminating the infestation... for now.)
+   * Make test suite not rely on a working cp -pr.
+     (The Unix wars are still ON!)
+   * Look for dir.git directories the same as git does.
+   * Support remote urls specified as relative paths.
+   * Support non-ssh remote paths that contain tilde expansions.
+   * fsck: Check for and repair location log damage.
+   * Bugfix: When fsck detected and moved away corrupt file content, it did
+     not update the location log."""]]