Drop the on/off functions

There are - and will be - better ways to turn a plugin on and off, than
having to implement on/off methods on the plugin itself. As such, remove
them.

Fixes #3.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

README.md

@@ -37,8 +37,8 @@ enabling the plugin:
 #include <Kaleidoscope-SpaceCadet.h>
 
 void setup () {
-  Kaleidoscope.setup (KEYMAP_SIZE);
-  Kaleidoscope.use (&SpaceCadetShift, NULL);
+  Kaleidoscope.setup ();
+  USE_PLUGINS (&SpaceCadetShift);
 }
 ```
 
@@ -63,19 +63,10 @@ The plugin has a number of methods available on the `SpaceCadetShift` object:
 ```c++
 void setup () {
   SpaceCadetShift.configure(Key_8, Key_9);
-  Kaleidoscope.setup (KEYMAP_SIZE);
+  Kaleidoscope.setup ();
 }
 ```
 
-### `.on()`
-
-> This method turns the SpaceCadet Shift behaviour on, if it was turned off.
-
-### `.off()`
-
-> Turns the SpaceCadet Shift behaviour off, making the `Shift` keys work as they
-> did before, without the additional behaviour.
-
 ### `.timeOut`
 
 > The number of milliseconds to wait before considering a held key in isolation

examples/SpaceCadet/SpaceCadet.ino

@@ -41,8 +41,8 @@ const Key keymaps[][ROWS][COLS] PROGMEM = {
 };
 
 void setup () {
-  Kaleidoscope.setup (KEYMAP_SIZE);
-  Kaleidoscope.use (&SpaceCadetShift, NULL);
+  Kaleidoscope.setup ();
+  USE_PLUGINS (&SpaceCadetShift);
 }
 
 void loop () {

src/Kaleidoscope/SpaceCadet.cpp

@@ -41,21 +41,6 @@ namespace KaleidoscopePlugins {
     rightParen = right;
   }
 
-  void
-  SpaceCadetShift::on (void) {
-    event_handler_hook_replace (this->noOpHook, this->eventHandlerHook);
-  }
-
-  void
-  SpaceCadetShift::off (void) {
-    event_handler_hook_replace (this->eventHandlerHook, this->noOpHook);
-  }
-
-  Key
-  SpaceCadetShift::noOpHook (Key mappedKey, byte row, byte col, uint8_t keyState) {
-    return mappedKey;
-  }
-
   Key
   SpaceCadetShift::eventHandlerHook (Key mappedKey, byte row, byte col, uint8_t keyState) {
     // If nothing happened, bail out fast.

src/Kaleidoscope/SpaceCadet.h

@@ -30,15 +30,12 @@ namespace KaleidoscopePlugins {
     static void configure (Key left, Key right);
     static uint16_t timeOut;
 
-    void on (void);
-    void off (void);
   private:
     static uint8_t parenNeeded;
     static uint32_t startTime;
     static Key leftParen, rightParen;
 
     static Key eventHandlerHook (Key mappedKey, byte row, byte col, uint8_t keyState);
-    static Key noOpHook (Key, byte row, byte col, uint8_t keyState);
   };
 };