Update upstream libraries

diff --git a/src/github.com/dustin/go-humanize b/src/github.com/dustin/go-humanize
index 79e699ccd02f240a1f1fbbdcee7e64c1c12e41aa..bb3d318650d48840a39aa21a027c6630e198e626 160000 (submodule)
--- a/src/github.com/dustin/go-humanize
+++ b/src/github.com/dustin/go-humanize
@@ -1 +1 @@
-Subproject commit 79e699ccd02f240a1f1fbbdcee7e64c1c12e41aa
+Subproject commit bb3d318650d48840a39aa21a027c6630e198e626

diff --git a/src/golang.org/x/crypto b/src/golang.org/x/crypto
index 9419663f5a44be8b34ca85f08abc5fe1be11f8a3..9f005a07e0d31d45e6656d241bb5c0f2efd4bc94 160000 (submodule)
--- a/src/golang.org/x/crypto
+++ b/src/golang.org/x/crypto
@@ -1 +1 @@
-Subproject commit 9419663f5a44be8b34ca85f08abc5fe1be11f8a3
+Subproject commit 9f005a07e0d31d45e6656d241bb5c0f2efd4bc94

diff --git a/src/golang.org/x/net b/src/golang.org/x/net
index a04bdaca5b32abe1c069418fb7088ae607de5bd0..9dfe39835686865bff950a07b394c12a98ddc811 160000 (submodule)
--- a/src/golang.org/x/net
+++ b/src/golang.org/x/net
@@ -1 +1 @@
-Subproject commit a04bdaca5b32abe1c069418fb7088ae607de5bd0
+Subproject commit 9dfe39835686865bff950a07b394c12a98ddc811

diff --git a/src/golang.org/x/sys b/src/golang.org/x/sys
index ebfc5b4631820b793c9010c87fd8fef0f39eb082..0dd5e194bbf5eb84a39666eb4c98a4d007e4203a 160000 (submodule)
--- a/src/golang.org/x/sys
+++ b/src/golang.org/x/sys
@@ -1 +1 @@
-Subproject commit ebfc5b4631820b793c9010c87fd8fef0f39eb082
+Subproject commit 0dd5e194bbf5eb84a39666eb4c98a4d007e4203a

diff --git a/src/gopkg.in/yaml.v2 b/src/gopkg.in/yaml.v2
index cd8b52f8269e0feb286dfeef29f8fe4d5b397e0b..287cf08546ab5e7e37d55a84f7ed3fd1db036de5 160000 (submodule)
--- a/src/gopkg.in/yaml.v2
+++ b/src/gopkg.in/yaml.v2
@@ -1 +1 @@
-Subproject commit cd8b52f8269e0feb286dfeef29f8fe4d5b397e0b
+Subproject commit 287cf08546ab5e7e37d55a84f7ed3fd1db036de5