Simple simulation code

Builds a native program on MacOS that runs the NuEVI firmware compiled for x86_64.
Only input is arrow keys for menu buttons for now. Only output is console and display.

Copied some more library files into the simulation folder, and renamed the modified *.cpp files from the libraries to *_sim.cpp.

simulation/Makefile

@@ -0,0 +1,65 @@
+CC=clang
+CXX=clang++
+
+CFLAGS= -O0 -g -Wall -Wextra -Wpedantic -Wno-gnu -mmacosx-version-min=10.9 -F/Library/Frameworks
+CFLAGS += -DARDUINO=10808 -D__MK20DX256__
+
+CXXFLAGS= $(CFLAGS) -std=c++14
+
+LIBS=-framework SDL2 -lc++ -lc -framework OpenGL
+LDFLAGS=-macosx_version_min 10.9
+
+SYSINC = ~/Documents/Arduino/libraries/Filters ./include
+INCS = ../NuEVI ./include
+
+INCDIRS = $(addprefix -isystem ,$(SYSINC))
+INCDIRS += $(addprefix -I,$(INCS))
+
+
+TARGET=nuevisim
+
+CXXFILES=		../NuEVI/menu.cpp \
+				src/nuevisim.cpp \
+				src/simeeprom.cpp \
+				src/Print.cpp \
+				src/simserial.cpp \
+				src/simwire.cpp \
+				src/simmidi.cpp \
+				src/filters.cpp \
+				src/Adafruit_GFX_sim.cpp \
+				src/Adafruit_SSD1306_sim.cpp \
+				src/Adafruit_MPR121_sim.cpp
+
+OBJS=$(CXXFILES:.cpp=.o) $(CFILES:.c=.o)
+
+all: $(TARGET)
+
+nuevisim: $(OBJS)
+	$(LD) $(LDFLAGS) -o $(TARGET) $(LIBS) $^
+
+%.o: %.c
+	$(CC) $(CFLAGS) $(INCDIRS) -c -o $@  $<
+
+%.o: %.cpp
+	$(CXX) $(CXXFLAGS) $(INCDIRS) -c -o $@  $<
+
+clean:
+	rm -f $(TARGET) $(OBJS) *.o
+
+.PHONY: all
+
+
+# Dependecies
+DEPS=make.deps
+
+.PHONY: deps mrproper
+mrproper: clean
+	rm $(DEPS)
+deps: $(DEPS)
+
+H_DEPS=$(wildcard src/*.h) $(wildcard ../NuEVI/*.h)
+
+make.deps: $(CXXFILES) $(H_DEPS)
+	$(CXX) $(CXXFLAGS) -Wno-deprecated $(INCDIRS) -MM $(DEPS_HS) $^ > $@
+
+-include .deps/*