Replace sysimage.jl by juliaw; add deps/formatter

Makefile

@@ -2,14 +2,8 @@
 # Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
 # Released under the modified BSD license. See COPYING.md for more details.
 
-JULIA := julia --color=yes --project=@.
 VERSION := 0.2
 
-build/sysimage.so: src/utils/sysimage.jl Project.toml
-	julia --project=. -e "using Pkg; Pkg.instantiate()"
-	julia --project=test -e "using Pkg; Pkg.instantiate()"
-	$(JULIA) src/utils/sysimage.jl test/runtests.jl
-
 clean:
 	rm -rfv build
 
@@ -17,13 +11,13 @@ docs:
 	cd docs; make clean; make dirhtml
 	rsync -avP --delete-after docs/_build/dirhtml/ ../docs/$(VERSION)/
 	
-test: build/sysimage.so
-	$(JULIA) --sysimage build/sysimage.so test/runtests.jl
-
 format:
-	julia -e 'using JuliaFormatter; format(["src", "test", "benchmark"], verbose=true);'
+	cd deps/formatter; ../../juliaw format.jl
 
-install-deps:
-	julia -e 'using Pkg; Pkg.add(PackageSpec(name="JuliaFormatter", version="0.14.4"))'
+test: test/Manifest.toml
+	./juliaw test/runtests.jl
+
+test/Manifest.toml: test/Project.toml
+	julia --project=test -e "using Pkg; Pkg.instantiate()"
 
 .PHONY: docs test format install-deps