Moved implementations to folder

Makefile

@@ -1,15 +1,15 @@
 CC=clang++
-CFLAGS=-pedantic -Wall -ggdb -fsanitize=address
+CFLAGS=-pedantic -Wall -Wextra -Werror -fsanitize=address -fsanitize=undefined -ggdb -fsanitize=address
 VFLAGS=--show-leak-kinds=all --leak-check=full
 OUT=
 
-btree.out: btree.cpp
+btree.out: impls/btree.cpp
 	$(CC) $(CFLAGS) $^ -o $@
 
-list.out: list.cpp
+list.out: impls/list.cpp
 	$(CC) $(CFLAGS) $^ -o $@
 
-bsearch.out: bsearch.cpp
+bsearch.out: impls/bsearch.cpp
 	$(CC) $(CFLAGS) $^ -o $@
 
 .PHONY: run
@@ -18,4 +18,4 @@ run: $(OUT)
 
 .PHONY: clean
 clean:
-	rm -v *.out;
+	rm -v *.out *.txt;