Update CHANGELOG.md to include config options (#450)

Author: j4m3s

CHANGELOG.md

@@ -11,6 +11,9 @@ All notable changes to this project will be documented in this file.
 ### Changed
 - Updated NimBLE core to use the v1.4.0 branch of esp-nimble.
 - AD flags are no longer set in the advertisements of non-connectable beacons, freeing up 3 bytes of advertisement room.
+- Config option CONFIG_BT_NIMBLE_DEBUG replaced with CONFIG_BT_NIMBLE_LOG_LEVEL (see src/nimconfig.h for usage)
+- Config option CONFIG_NIMBLE_CPP_ENABLE_ADVERTISMENT_TYPE_TEXT renamed to CONFIG_NIMBLE_CPP_ENABLE_ADVERTISEMENT_TYPE_TEXT
+- Config option CONFIG_BT_NIMBLE_TASK_STACK_SIZE renamed to CONFIG_BT_NIMBLE_HOST_TASK_STACK_SIZE
 
 ### Added
 - Preliminary support for non-esp devices, NRF51 and NRF52 devices supported with [n-able arduino core](https://github.com/h2zero/n-able-Arduino)