Add removal dates for deprecated core functions

Signed-off-by: Michael Richters <gedankenexperimenter@gmail.com>

src/kaleidoscope_internal/deprecations.h

@@ -33,33 +33,39 @@
   "'active keys' cache, which now represents the state of the active\n"       __NL__ \
   "keys at any given time. It is probably not necessary to directly\n"        __NL__ \
   "update that cache from a plugin, but if you need to, please use\n"         __NL__ \
-  "the `live_keys.activate(key_addr, key)` function instead."
+  "the `live_keys.activate(key_addr, key)` function instead.\n"               __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_LAYER_EVENTHANDLER                                __NL__ \
   "`Layer.eventHandler()` is deprecated.\n"                                   __NL__ \
-  "Please use `Layer.handleKeymapKeyswitchEvent()` instead."
+  "Please use `Layer.handleKeymapKeyswitchEvent()` instead.\n"                __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_LAYER_HANDLE_KEYMAP_KEYSWITCH_EVENT               __NL__ \
   "`Layer.handleKeymapKeyswitchEvent()` is deprecated.\n"                     __NL__ \
-  "Please use `Layer.handleLayerKeyEvent()` instead."
+  "Please use `Layer.handleLayerKeyEvent()` instead.\n"                       __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_LAYER_LOOKUP                                      __NL__ \
   "`Layer.lookup(key_addr)` is deprecated.\n"                                 __NL__ \
   "Please use `Runtime.lookupKey(key_addr)` instead. Alternatively, if you\n" __NL__ \
   "need to look up the current keymap entry without regard to current live\n" __NL__ \
   "key state(s) (i.e. the `live_keys` array, which normally overrides the\n"  __NL__ \
-  "keymap), you can use `Layer.lookupOnActiveLayer(key_addr)`."
+  "keymap), you can use `Layer.lookupOnActiveLayer(key_addr)`.\n"             __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_HANDLE_KEYSWITCH_EVENT                            __NL__ \
   "`handleKeyswitchEvent()` has been deprecated.\n"                           __NL__ \
-  "Please use `Runtime.handleKeyEvent()` instead."
+  "Please use `Runtime.handleKeyEvent()` instead.\n"                          __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_ON_KEYSWITCH_EVENT_V1                             __NL__ \
   "The `onKeyswitchEvent()` event handler is deprecated.\n"                   __NL__ \
   "Please replace it with an `onKeyEvent()` handler. See the documentation\n" __NL__ \
   "in UPGRADING.md and docs/api-reference/event-handler-hooks.md for more\n"  __NL__ \
   "information on what changes are needed to adapt old plugins to the new\n"  __NL__ \
-  "event handler API."
+  "event handler API.\n"                                                      __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_BEFORE_REPORTING_STATE_V1                          __NL__ \
   "This `beforeReportingState()` event handler version is deprecated.\n"       __NL__ \
@@ -68,11 +74,13 @@
   "report is sent. However, the new handler does not run every cycle, but\n"   __NL__ \
   "only in response to key events. If you have code that is intended to run\n" __NL__ \
   "every scan cycle, it should be moved to the `afterEachCycle()` event\n"     __NL__ \
-  "handler instead."
+  "handler instead.\n"                                                         __NL__ \
+  "This function will be removed after 2021-08-01."
 
 #define _DEPRECATED_MESSAGE_HID_KEYBOARD_PRESSKEY_TOGGLEDON                    __NL__ \
   "The `Keyboard::pressKey(key, toggled_on)` function is deprecated.\n"        __NL__ \
   "Please use `Keyboard::pressKey(key)` without the second argument\n"         __NL__ \
   "instead. The version with two arguments handled rollover events, and\n"     __NL__ \
   "this is now handled more completely by the event handling functions in\n"   __NL__ \
-  "`Runtime`."
+  "`Runtime`.\n"                                                               __NL__ \
+  "This function will be removed after 2021-08-01."