Preparing release 1.5.0 (#761)

Signed-off-by: Ruben Vargas <[email protected]>

Author: rubenvp8510

CHANGELOG.md

@@ -1,12 +1,20 @@
 Changes by Version
 ==================
 
-1.5.0 (unreleased)
+1.6.0 (unreleased)
 -------------------
 
 - Nothing yet.
 
 
+1.5.0 (2020-11-12)
+-------------------
+
+- Upgrade okhttp to 4.9.0 (#749) -- Yuri Shkuro
+- Do not strip leading zeros from trace IDs (#746) -- Yuri Shkuro
+- Document how to encrypt travis secrets (#744) -- Pavol Loffay
+
+
 1.4.0 (2020-09-07)
 -------------------