Start a changelog for 0.2.6.8

ChangeLog

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+Changes in version 0.2.6.8 - 2015-05-2?
+  Tor 0.2.6.8 fixes a bit of dodgy code in parsing INTRODUCE2 cells, and
+  fixes an authority-side bug in assigning the HSDir flag. All directory
+  authorities should upgrade.
+
+  o Major bugfixes (hidden services):
+    - Revert commit that made directory authorities assign the HSDir
+      flag to relay without a DirPort; this was bad because such relays
+      can't handle BEGIN_DIR cells. Fixes bug 15850; bugfix
+      on tor-0.2.6.3-alpha.
+
+  o Minor bugfixes (hidden service):
+    - Fix an out-of-bounds read when parsing invalid INTRODUCE2 cells on
+      a client authorized hidden service. Fixes bug 15823; bugfix
+      on 0.2.1.6-alpha.
+
+  o Minor features (geoip):
+    - Update geoip to the April 8 2015 Maxmind GeoLite2 Country database.
+    - Update geoip6 to the April 8 2015 Maxmind GeoLite2
+      Country database.
+
 Changes in version 0.2.6.7 - 2015-04-06
   Tor 0.2.6.7 fixes two security issues that could be used by an
   attacker to crash hidden services, or crash clients visiting hidden

changes/bug15823

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-  o Minor bugfixes (hidden service):
-    - Fix an out-of-bounds read when parsing invalid INTRODUCE2 cells
-      on a client authorized hidden service. Fixes bug 15823; bugfix
-      on 0.2.1.6-alpha.

changes/bug15850

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-  o Major bugfix
-    - Revert commit that made directory authority assign the HSDir flag to
-      relay without a DirPort which is bad because relay can't handle
-      BEGIN_DIR cells. Fixes #15850. Bugfix on tor-0.2.6.3-alpha;

changes/geoip-april2015

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-  o Minor features:
-    - Update geoip to the April 8 2015 Maxmind GeoLite2 Country database.
-

changes/geoip6-april2015

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-  o Minor features:
-    - Update geoip6 to the April 8 2015 Maxmind GeoLite2 Country database.