Vendor dependencies

Let's see how I like this workflow.

vendor/termcolor/Cargo.toml

@@ -0,0 +1,43 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "termcolor"
+version = "1.1.3"
+authors = ["Andrew Gallant <jamslam@gmail.com>"]
+exclude = [
+    "/.travis.yml",
+    "/appveyor.yml",
+    "/ci/**",
+]
+description = """
+A simple cross platform library for writing colored text to a terminal.
+"""
+homepage = "https://github.com/BurntSushi/termcolor"
+documentation = "https://docs.rs/termcolor"
+readme = "README.md"
+keywords = [
+    "windows",
+    "win",
+    "color",
+    "ansi",
+    "console",
+]
+license = "Unlicense OR MIT"
+repository = "https://github.com/BurntSushi/termcolor"
+
+[lib]
+name = "termcolor"
+bench = false
+
+[target."cfg(windows)".dependencies.winapi-util]
+version = "0.1.3"