Release: DeOS, v0.7-alpha.1

ΔOS v0.7-alpha.1 (#62)

* update-style: bootstrap.mk spacing

* mv: obj -> .obj

* init: test

* rm: build

* rm: build

* rm: SPEC.md,requirements.txt

* rm: TODO.md

* mv: external -> .ext

* clean: file system

* mv: install -> host

* update-style: config.mk