updated library, tested example buildability

suculent · suculent · commit 2968170cc898 · 2018-04-17T17:42:06.000+02:00
diff --git a/lib/thinx-firmware-esp32 b/lib/thinx-firmware-esp32
@@ -1 +1 @@
-Subproject commit 06c0d6c98bb59a025ef246fcb9db5f9f9d6dd204
+Subproject commit 39bfef6bcf916d25d6cedc5c44e3ddba966240fd
