chore: add 1.8.6 changelog

CHANGELOG.md

@@ -1,4 +1,4 @@
-# 🌃 [1.9.0-13](https://github.com/ionic-team/stencil/compare/v1.8.5...v1.9.0-13) (2020-01-20)
+# 🌃 [1.9.0-13](https://github.com/ionic-team/stencil/compare/v1.8.6...v1.9.0-13) (2020-01-20)
 
 With the `1.9.0` release, the default compiler is the same as `1.8.x`. However, to opt-in to test the improved compiler use the `--next` flag. Once the "next" compiler is stable we'll then make it the default in the `1.10.0` release. Currently the next compiler is passing all tests, but we'd like to get more real-world testing before making it the default.
 
@@ -157,6 +157,21 @@ Some of main features with the `--next` compiler include:
 
 
 
+## 🚚 [1.8.6](https://github.com/ionic-team/stencil/compare/v1.8.5...v1.8.6) (2020-01-24)
+
+Updated:
+
+- TypeScript 3.7.5
+- Rollup 1.29.1
+- Terser 4.6.3
+
+### Bug Fixes
+
+* **dist:** optionally provide defineCustomElements window ([dfca3ed](https://github.com/ionic-team/stencil/commit/dfca3edae2831652e84633eff4218535e41099d1))
+* **ie11:** indexOf instead of includes ([2f16d2a](https://github.com/ionic-team/stencil/commit/2f16d2aa6372e8043cc36f61aa13c7bde40519bb)), closes [#2151](https://github.com/ionic-team/stencil/issues/2151)
+
+
+
 ## 🏕 [1.8.5](https://github.com/ionic-team/stencil/compare/v1.8.4...v1.8.5) (2020-01-09)