Merge pull request #219 from sergey-alekseev/fix-v-3-1-13-changelog

Fix v3.1.13 changelog entry

CHANGELOG

@@ -1,12 +1,11 @@
 [DRAFT] 4.0.0 MMM DD YYYY
+  - Start calibration from the minimum cost supported by the algorithm [GH #206 by @sergey-alekseev]
 
 3.1.13 May 31 2019
   - No longer include compiled binaries for Windows. See GH #173.
   - Update C and Java implementations to latest versions [GH #182 by @fonica]
   - Bump default cost to 12 [GH #181 by @bdewater]
   - Remove explicit support for Rubies 1.8 and 1.9
-  - Start calibration from the minimum cost supported by the algorithm [GH #206 by @sergey-alekseev]
-  - Remove explicit support for Rubies 1.8 and 1.9 [GH #185 by @tjschuck]
   - Define SKIP_GNU token when building extension (Fixes FreeBSD >= 12) [GH #189 by @adam12]
 
 3.1.12 May 16 2018
@@ -96,4 +95,4 @@
  - Added validation of secrets -- nil is not healthy.
 
 1.0.0  Feb 27 2007
- - Initial release.
+ - Initial release.