Add upcoming release section to CHANGELOG.md (#474)

* Add Upcoming Release section to CHANGELOG.md

packages/devtools/CHANGELOG.md

diff --git a/packages/devtools/CHANGELOG.md b/packages/devtools/CHANGELOG.md
index 56e4280..7aa398e 100644
--- a/packages/devtools/CHANGELOG.md
+++ b/packages/devtools/CHANGELOG.md
@@ -1,9 +1,13 @@
+## 0.0.15 - Date TBD
+* Warn users when they should be using a profile build of their application instead of a debug build.
+
 ## 0.0.14 - 2019-03-26
 * Dark mode is ready to use, add ```&theme=dark``` at the end of the URI used to open the DevTool in Chrome. We look forward to your feedback.
 * Added event timeline to memory profiler to track DevTool's Snapshot and Reset events.
 * Timeline CPU renamed to UI, janky defined as UI duration + GPU duration > 16 ms.
 * Timeline frame chart removed 8 ms highwater line, only 16 ms highwater line, display 2 traces ui/gpu (instead of 4). Janky frames will have a red glow.
 * Flame chart colors use a different set of palettes and timeline is sticky.
+* Warn users when they are using an unsupported browser.
 * Properly disable features that aren't supported for the connected application.
 * Fix screens for different widths.
 ## 0.0.13 - 2019-03-15
@@ -25,4 +29,4 @@
 ### Memory
 ### Table
 ### Timeline
--->
\ No newline at end of file
+-->