* build break fix for HelixPico * add customize variable 'Link_Time_Optimization' into rev2 and pico keymaps rules.mk * "CFLAGS += -flto" change to "EXTRAFLAGS += -flto" * add USE_Link_Time_Optimization macro
* Added keymap for Helix like Japanese JIS keyboard. * * Refactored * Supported to display of exchange layer