Revert "Remove spdlog as dependency as it has been included in ROS2"

Minggang Wang · Minggang Wang · commit f2f6a68bfe90 · 2019-11-17T20:02:49.000+08:00
This reverts commit 6bef079.
diff --git a/src/third_party/spdlog b/src/third_party/spdlog
@@ -0,0 +1 @@
+Subproject commit 4371092309e999052513b109dc68f7a260153681
