Rearrange the file layout in preparation of becoming a monorepo

Move the documentation to `doc/plugin/MagicCombo.md`, sources under
`src/kaleidoscope/plugin/` (appropriately namespaced). This is in preparation of
merging plugins into a single monorepo.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

README.md

@@ -5,71 +5,4 @@
  [travis:image]: https://travis-ci.org/keyboardio/Kaleidoscope-MagicCombo.svg?branch=master
  [travis:status]: https://travis-ci.org/keyboardio/Kaleidoscope-MagicCombo
 
-The `MagicCombo` extension provides a way to perform custom actions when a
-particular set of keys are held down together. The functionality assigned to
-these keys are not changed, and the custom action triggers as long as all keys
-within the set are pressed. The order in which they were pressed do not matter.
-
-This can be used to tie complex actions to key chords.
-
-## Using the extension
-
-To use the extension, we must include the header, create actions for the magic
-combos we want to trigger, and set up a mapping:
-
-```c++
-#include <Kaleidoscope.h>
-#include <Kaleidoscope-Macros.h>
-#include <Kaleidoscope-MagicCombo.h>
-
-enum { KIND_OF_MAGIC };
-
-void kindOfMagic(uint8_t combo_index) {
-  Macros.type(PSTR("It's a kind of magic!"));
-}
-
-USE_MAGIC_COMBOS(
-[KIND_OF_MAGIC] = {
-  .action = kindOfMagic,
-  .keys = {R3C6, R3C9} // Left Fn + Right Fn
-});
-
-KALEIDOSCOPE_INIT_PLUGINS(MagicCombo, Macros);
-
-void setup() {
-  Kaleidoscope.setup();
-}
-```
-
-It is recommended to use the `RxCy` macros of the core firmware to set the keys
-that are part of a combination.
-
-## Plugin properties
-
-The extension provides a `MagicCombo` singleton object, with the following
-property:
-
-### `.min_interval`
-
-> Restrict the magic action to fire at most once every `min_interval`
-> milliseconds.
->
-> Defaults to 500.
-
-## Plugin callbacks
-
-Whenever a combination is found to be held, the plugin will trigger the
-specified action, which is just a regular method with a single `uint8_t`
-argument: the index of the magic combo. This function will be called repeatedly
-(every `min_interval` milliseconds) while the combination is held.
-
-## Further reading
-
-Starting from the [example][plugin:example] is the recommended way of getting
-started with the plugin.
-
-`RxCy` coordinates for a Model01:
-
-![rxcy layout](./docs/rc_layout.png)
-
- [plugin:example]: https://github.com/keyboardio/Kaleidoscope-MagicCombo/blob/master/examples/MagicCombo/MagicCombo.ino
+See [doc/plugin/MagicCombo.md](doc/plugin/MagicCombo.md) for documentation.

doc/plugin/MagicCombo.md

@@ -1,5 +1,75 @@
-Breaking changes in `MagicCombo`
-================================
+# Kaleidoscope-MagicCombo
+
+The `MagicCombo` extension provides a way to perform custom actions when a
+particular set of keys are held down together. The functionality assigned to
+these keys are not changed, and the custom action triggers as long as all keys
+within the set are pressed. The order in which they were pressed do not matter.
+
+This can be used to tie complex actions to key chords.
+
+## Using the extension
+
+To use the extension, we must include the header, create actions for the magic
+combos we want to trigger, and set up a mapping:
+
+```c++
+#include <Kaleidoscope.h>
+#include <Kaleidoscope-Macros.h>
+#include <Kaleidoscope-MagicCombo.h>
+
+enum { KIND_OF_MAGIC };
+
+void kindOfMagic(uint8_t combo_index) {
+  Macros.type(PSTR("It's a kind of magic!"));
+}
+
+USE_MAGIC_COMBOS(
+[KIND_OF_MAGIC] = {
+  .action = kindOfMagic,
+  .keys = {R3C6, R3C9} // Left Fn + Right Fn
+});
+
+KALEIDOSCOPE_INIT_PLUGINS(MagicCombo, Macros);
+
+void setup() {
+  Kaleidoscope.setup();
+}
+```
+
+It is recommended to use the `RxCy` macros of the core firmware to set the keys
+that are part of a combination.
+
+## Plugin properties
+
+The extension provides a `MagicCombo` singleton object, with the following
+property:
+
+### `.min_interval`
+
+> Restrict the magic action to fire at most once every `min_interval`
+> milliseconds.
+>
+> Defaults to 500.
+
+## Plugin callbacks
+
+Whenever a combination is found to be held, the plugin will trigger the
+specified action, which is just a regular method with a single `uint8_t`
+argument: the index of the magic combo. This function will be called repeatedly
+(every `min_interval` milliseconds) while the combination is held.
+
+## Further reading
+
+Starting from the [example][plugin:example] is the recommended way of getting
+started with the plugin.
+
+`RxCy` coordinates for a Model01:
+
+![rxcy layout](../model01_coordinates.png)
+
+ [plugin:example]: https://github.com/keyboardio/Kaleidoscope-MagicCombo/blob/master/examples/MagicCombo/MagicCombo.ino
+
+## Upgrading
 
 To make `MagicCombo` more portable, and easier to use, we had to break the API
 previously provided, there was no way to maintain backwards compatibility. This

src/Kaleidoscope-MagicCombo.h

@@ -17,4 +17,4 @@
 
 #pragma once
 
-#include <Kaleidoscope/MagicCombo.h>
+#include <kaleidoscope/plugin/MagicCombo.h>

src/kaleidoscope/plugin/MagicCombo.cpp

@@ -18,6 +18,7 @@
 #include <Kaleidoscope-MagicCombo.h>
 
 namespace kaleidoscope {
+namespace plugin {
 
 uint16_t MagicCombo::min_interval = 500;
 uint32_t MagicCombo::end_time_;
@@ -52,6 +53,7 @@ EventHandlerResult MagicCombo::beforeReportingState() {
   return EventHandlerResult::OK;
 }
 
-};
+}
+}
 
-kaleidoscope::MagicCombo MagicCombo;
+kaleidoscope::plugin::MagicCombo MagicCombo;

src/kaleidoscope/plugin/MagicCombo.h

@@ -23,11 +23,14 @@
 
 #define USE_MAGIC_COMBOS(...)                                             \
   namespace kaleidoscope {                                                \
+  namespace plugin {                                                      \
   namespace magiccombo {                                                  \
-  const kaleidoscope::MagicCombo::Combo combos[] PROGMEM = {__VA_ARGS__}; \
+  const kaleidoscope::plugin::MagicCombo::Combo combos[] PROGMEM =        \
+    {__VA_ARGS__};                                                        \
                                                                           \
   const uint8_t combos_length = sizeof(combos) / sizeof(*combos);         \
   }                                                                       \
+  }                                                                       \
   }
 
 #define _MAGICCOMBO_API_CHANGE                                            \
@@ -38,6 +41,7 @@
   " https://github.com/keyboardio/Kaleidoscope-MagicCombo/blob/master/UPGRADING.md"
 
 namespace kaleidoscope {
+namespace plugin {
 
 class MagicCombo : public kaleidoscope::Plugin {
  public:
@@ -73,4 +77,8 @@ extern const uint8_t combos_length;
 
 }
 
-extern kaleidoscope::MagicCombo MagicCombo;
+// Backward compatibility
+typedef plugin::MagicCombo MagicCombo;
+}
+
+extern kaleidoscope::plugin::MagicCombo MagicCombo;