Add Daniel Gordon's Ergodox Infinity and Chimera

* gordon.c defines many aliases for KC codes.
   * gordon.c defines many advanced tap dance functions.
   * This is a squashed commit of about 6 months of work on chimera and
     ergodox infinity changes.
   * Ignore the change-id below.

Change-Id: I83927139e8a80fe08992ae91ec7d62571498f7f7

users/gordon/gordon.h

@@ -0,0 +1,157 @@
+#ifndef GORDON
+#define GORDON
+
+#include "quantum.h"
+#include "process_keycode/process_tap_dance.h"
+
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define ________ KC_TRNS
+#define _________ KC_TRNS
+#define XXXXXXX KC_NO
+
+// KC codes that are too long
+#define DOLLAR KC_DOLLAR
+#define LSQUIGLY KC_LBRACKET
+#define RSQUIGLY KC_RBRACKET
+#define NUMLOCK KC_NUMLOCK
+#define CAPLOCK KC_CAPSLOCK
+#define BK_SLASH KC_BSLASH
+#define ASTERSK KC_KP_ASTERISK
+ 
+// Navigation
+#define SNAPLEFT  LGUI(KC_LEFT)
+#define SNAPRGHT  LGUI(KC_RIGHT)
+#define SNAPUP    LGUI(KC_UP)
+#define SNAPDOWN  LGUI(KC_DOWN)
+#define PREVTAB   LCTL(LSFT(KC_TAB))
+#define NEXTTAB   LCTL(KC_TAB)
+#define WORKRIGHT LCTL(LGUI(KC_RIGHT))
+#define WORKLEFT  LCTL(LGUI(KC_LEFT))
+
+// KC/modifier hold
+#define CTRL_F   CTL_T(KC_F)
+#define CTRL_J   CTL_T(KC_J)
+#define CTRL_Z   CTL_T(KC_Z)
+#define ALT_V    ALT_T(KC_V)
+#define ALT_M    ALT_T(KC_M)
+#define WIN_G    GUI_T(KC_G)
+#define WIN_H    GUI_T(KC_H)
+#define HYPER_X  ALL_T(KC_X)
+#define HYPE_DOT ALL_T(KC_DOT)
+#define MEH_S    MEH_T(KC_S)
+#define MEH_L    MEH_T(KC_L)
+#define ALT_HOME ALT_T(KC_HOME)
+
+
+// KC/Layer Hold
+#define NAV_E    LT(_NAV,KC_E)
+#define NUMPAD_D LT(_NUMPAD,KC_D)
+#define MOUSE_C  LT(_MOUSE,KC_C)
+#define SYMB_BSP LT(_SYMBOLS,KC_BSPACE)
+#define COL_MOUS LT(_MOUSE,KC_SCOLON)
+#define SPAC_SYM LT(_SYMBOLS,KC_SPACE)
+
+// Double Modifier ONLY hold
+#define ALT_SHFT LSFT(KC_LALT)
+#define CTR_SHFT LSFT(KC_LCTL)
+
+// KC/Double modifier Hold
+#define CTR_SH_W MT(MOD_LCTL|MOD_LSFT,KC_W)
+#define CTR_AL_R MT(MOD_LCTL|MOD_LALT,KC_R)
+
+//MISC
+#define PRINTSCR KC_PSCREEN
+#define CALTDEL LCTL(LALT(KC_DEL))
+#define TSKMGR LCTL(LSFT(KC_ESC))
+
+
+typedef struct {
+  bool is_press_action;
+  int state;
+} xtap;
+
+enum {
+  SINGLE_TAP = 1,
+  SINGLE_HOLD = 2,
+  DOUBLE_TAP = 3,
+  DOUBLE_HOLD = 4,
+  DOUBLE_SINGLE_TAP = 5, //send two single taps
+  TRIPLE_TAP = 6,
+  TRIPLE_HOLD = 7
+};
+
+enum gordon_layers
+{
+  _QWERTY = 0,
+  _SYMBOLS,
+  _MOUSE,
+  _NUMPAD,
+  _NAV,
+  _MACROS,
+  _FUNCTION,
+  _TEXTNAV
+};
+
+
+
+void register_hyper (void);
+void unregister_hyper (void);
+
+void register_ctrl_a (void); 
+void unregister_ctrl_a (void); 
+
+void register_alt_f7 (void); 
+void unregister_alt_f7 (void);
+
+void register_shift_f6 (void); 
+void unregister_shift_f6 (void); 
+
+void register_ctrl_shift (void); 
+void unregister_ctrl_shift (void); 
+
+void register_alt_shift (void); 
+void unregister_alt_shift (void);
+
+int cur_dance (qk_tap_dance_state_t *state); 
+int hold_cur_dance (qk_tap_dance_state_t *state); 
+
+void x_finished (qk_tap_dance_state_t *state, void *user_data);
+void x_reset (qk_tap_dance_state_t *state, void *user_data);
+
+void h_finished (qk_tap_dance_state_t *state, void *user_data);
+void h_reset (qk_tap_dance_state_t *state, void *user_data);
+
+void tab_finished (qk_tap_dance_state_t *state, void *user_data);
+void tab_reset (qk_tap_dance_state_t *state, void *user_data);
+
+void comma_finished (qk_tap_dance_state_t *state, void *user_data);
+void comma_reset (qk_tap_dance_state_t *state, void *user_data);
+
+void bt_finished (qk_tap_dance_state_t *state, void *user_data);
+void bt_reset (qk_tap_dance_state_t *state, void *user_data);
+
+// Macro Declarations
+enum {
+  INFOQM,
+  TIL_SLASH,
+  DEREF,
+  EQRIGHT,
+  TILD3,
+  TICK3,
+  ALTTAB_START,
+  ALTTAB_END
+};
+
+enum secret_strings {
+  KC_SECRET_1 = SAFE_RANGE,
+  KC_SECRET_2,
+  KC_SECRET_3,
+  KC_SECRET_4,
+  KC_SECRET_5,
+};
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt);
+
+#endif