Switch to new download format, update dependencies and source.sh script

pkg.info

@@ -1,9 +1,20 @@
 name: micro
 description: A modern and intuitive terminal-based text editor
 version: 2.0.14
-revision: 4
+revision: 5
 url: https://micro-editor.github.io/
 license: MIT
 architecture: any
-make_depends: ["golang"]
 type: source
+optional_depends:
+  - wl-clipboard
+  - xclip
+make_depends:
+  - git
+  - golang
+downloads:
+  - url: https://github.com/zyedidia/micro.git
+    type: git
+    clone_to: ${BPM_SOURCE}
+    git_branch: v${BPM_PKG_VERSION}
+    checksum: 04c577049ca898f097cd6a2dae69af0b4d4493e1