v0.2.0: Box renderable — border, background, and title

- Box class with border-style, title, fg/bg slots
- render-box dispatches through backend protocol
- draw-border for borders, draw-rect for background
- draw-text for title below top border
- 7 tests: defaults, border, background, title, no-border,
  zero-size, minimum-size
- 13 assertions, 100% GREEN
- ASDF updated with src/components module
- modern-backend now accepts :output-stream initarg

cl-tui.asd

@@ -2,7 +2,7 @@
 (asdf:defsystem :cl-tui
   :description "Reusable Common Lisp Terminal UI Framework"
   :author "Amr Gharbeia"
-  :version "0.0.3"
+  :version "0.2.0"
   :license "TBD"
   :depends-on (:fiveam)
   :components
@@ -14,7 +14,11 @@
      (:file "modern" :depends-on ("package" "classes"))))
    (:module "layout"
     :components
-    ((:file "layout"))))
+    ((:file "layout")))
+   (:module "src/components"
+    :components
+    ((:file "package")
+     (:file "box" :depends-on ("package")))))
   :in-order-to ((test-op (test-op :cl-tui-tests))))
 
 (asdf:defsystem :cl-tui-tests
@@ -26,6 +30,9 @@
     ((:file "tests")))
    (:module "layout"
     :components
-    ((:file "tests"))))
+    ((:file "tests")))
+   (:module "src/components"
+    :components
+    ((:file "box-tests"))))
   :perform (test-op (o c)
              (uiop:symbol-call :cl-tui-backend-test '#:run!)))