CHANGES.md: Formatting fixups

CHANGES.md

-1.0.15.1 (2017-11-08)
----------------------
+# 1.0.15.1 (2017-11-08)
+
 * Run autogen.sh prior to release. D'oh!
 
-1.0.15 (2017-11-08)
--------------------
+# 1.0.15 (2017-11-08)
+
 * Update to libsodium 1.0.15
 * OpenBSD support
 
-1.0.13 (2017-08-15)
--------------------
+# 1.0.13 (2017-08-15)
+
 * Update to libsodium 1.0.13
 
-1.0.11 (2016-11-27)
--------------------
+# 1.0.11 (2016-11-27)
+
 * Update to libsodium 1.0.11
 
-1.0.10 (2016-04-16)
--------------------
+# 1.0.10 (2016-04-16)
+
 * Update to libsodium 1.0.10
 * Windows support fixups, take 2 (hopefully actually working)
 
-1.0.9 (2016-04-02)
-------------------
+# 1.0.9 (2016-04-02)
+
 * Update to libsodium 1.0.9
 * Windows support fixups
 
-1.0.8 (2015-12-26)
-------------------
+# 1.0.8 (2015-12-26)
+
 * Update to libsodium 1.0.8
 
-1.0.7 (2015-12-08)
-------------------
+# 1.0.7 (2015-12-08)
+
 * Update to libsodium 1.0.7
 
-1.0.6 (2015-11-01)
-------------------
+# 1.0.6 (2015-11-01)
+
 * Update to libsodium 1.0.6
 
-1.0.5 (2015-11-01)
-------------------
+# 1.0.5 (2015-11-01)
+
 * Update to libsodium 1.0.5
 
-1.0.4 (2015-10-18)
-------------------
+# 1.0.4 (2015-10-18)
+
 * Update to libsodium 1.0.4
 
-1.0.3 (2015-05-10)
-------------------
+# 1.0.3 (2015-05-10)
+
 * Update to libsodium 1.0.3
 
-1.0.2 (2015-01-31)
-------------------
+# 1.0.2 (2015-01-31)
+
 * Update to libsodium 1.0.2
 
-1.0.1 (2014-11-25)
-------------------
+# 1.0.1 (2014-11-25)
+
 * Update to libsodium 1.0.1
 
-1.0.0 (2014-09-27)
-------------------
+# 1.0.0 (2014-09-27)
+
 * Update to libsodium 1.0.0
 
-0.7.0 (2014-08-24)
-------------------
+# 0.7.0 (2014-08-24)
+
 * Update to libsodium 0.7.0
 
-0.6.1 (2014-07-19)
-------------------
+# 0.6.1 (2014-07-19)
+
 * Update to libsodium 0.6.1
 
-0.6.0 (2014-07-03)
-------------------
+# 0.6.0 (2014-07-03)
+
 * Update to libsodium 0.6.0
 
-0.5.0.1 (2014-06-14)
---------------------
+# 0.5.0.1 (2014-06-14)
+
 * Run autogen.sh in advance so systems without autotools still work
 
-0.5.0 (2014-05-14)
-------------------
+# 0.5.0 (2014-05-14)
+
 * Update to libsodium 0.5.0
 
-0.4.5 (2014-05-13)
-------------------
+# 0.4.5 (2014-05-13)
+
 * Initial release with libsodium 0.4.5