diff --git a/Gopkg.lock b/Gopkg.lock
index c854290..065fa11 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -2,24 +2,19 @@
 
 
 [[projects]]
-  digest = "1:0deddd908b6b4b768cfc272c16ee61e7088a60f7fe2f06c547bd3d8e1f8b8e77"
   name = "github.com/davecgh/go-spew"
   packages = ["spew"]
-  pruneopts = ""
   revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
   version = "v1.1.1"
 
 [[projects]]
-  digest = "1:ee44d4de102276888a69df382c76c3dff0da8c3f5ac5393f3a3d3447a1203fd7"
   name = "github.com/dghubble/sling"
   packages = ["."]
-  pruneopts = ""
   revision = "eb56e89ac5088bebb12eef3cb4b293300f43608b"
   version = "v1.1.0"
 
 [[projects]]
   branch = "master"
-  digest = "1:5c1ef2b35731f69dbb50233d7f028c549a417bdf2127d2d420eedf50ff9a24e2"
   name = "github.com/dsnet/compress"
   packages = [
     ".",
@@ -27,70 +22,67 @@
     "bzip2/internal/sais",
     "internal",
     "internal/errors",
-    "internal/prefix",
+    "internal/prefix"
   ]
-  pruneopts = ""
   revision = "cc9eb1d7ad760af14e8f918698f745e80377af4f"
 
 [[projects]]
-  digest = "1:9f1e571696860f2b4f8a241b43ce91c6085e7aaed849ccca53f590a4dc7b95bd"
+  name = "github.com/emirpasic/gods"
+  packages = [
+    "containers",
+    "lists",
+    "lists/arraylist",
+    "trees",
+    "trees/binaryheap",
+    "utils"
+  ]
+  revision = "1615341f118ae12f353cc8a983f35b584342c9b3"
+  version = "v1.12.0"
+
+[[projects]]
   name = "github.com/fsnotify/fsnotify"
   packages = ["."]
-  pruneopts = ""
   revision = "629574ca2a5df945712d3079857300b5e4da0236"
   version = "v1.4.2"
 
 [[projects]]
   branch = "master"
-  digest = "1:27854310d59099f8dcc61dd8af4a69f0a3597f001154b2fb4d1c41baf2e31ec1"
   name = "github.com/golang/protobuf"
   packages = ["proto"]
-  pruneopts = ""
   revision = "130e6b02ab059e7b717a096f397c5b60111cae74"
 
 [[projects]]
   branch = "master"
-  digest = "1:09307dfb1aa3f49a2bf869dcfa4c6c06ecd3c207221bd1c1a1141f0e51f209eb"
   name = "github.com/golang/snappy"
   packages = ["."]
-  pruneopts = ""
   revision = "553a641470496b2327abcac10b36396bd98e45c9"
 
 [[projects]]
   branch = "master"
-  digest = "1:68f7359dbb17469aa1f1fa25954468e9627f9d0733e2c7505ed99db5e265ca28"
   name = "github.com/google/go-github"
   packages = ["github"]
-  pruneopts = ""
   revision = "a021c14a5f1960591b0e1773a4a2ef8257ec93b8"
 
 [[projects]]
   branch = "master"
-  digest = "1:9abc49f39e3e23e262594bb4fb70abf74c0c99e94f99153f43b143805e850719"
   name = "github.com/google/go-querystring"
   packages = ["query"]
-  pruneopts = ""
   revision = "53e6ce116135b80d037921a7fdd5138cf32d7a8a"
 
 [[projects]]
   branch = "master"
-  digest = "1:304c322b62533a48ac052ffee80f67087fce1bc07186cd4e610a1b0e77765836"
   name = "github.com/hashicorp/errwrap"
   packages = ["."]
-  pruneopts = ""
   revision = "7554cd9344cec97297fa6649b055a8c98c2a1e55"
 
 [[projects]]
   branch = "master"
-  digest = "1:b46ef59de1f724e8a2b508ea2b329eaf6cac4d71cbd44ad5e3dbd4e8fd49de9b"
   name = "github.com/hashicorp/go-multierror"
   packages = ["."]
-  pruneopts = ""
   revision = "b7773ae218740a7be65057fc60b366a49b538a44"
 
 [[projects]]
   branch = "master"
-  digest = "1:147d671753effde6d3bcd58fc74c1d67d740196c84c280c762a5417319499972"
   name = "github.com/hashicorp/hcl"
   packages = [
     ".",
@@ -101,306 +93,253 @@
     "hcl/token",
     "json/parser",
     "json/scanner",
-    "json/token",
+    "json/token"
   ]
-  pruneopts = ""
   revision = "23c074d0eceb2b8a5bfdbb271ab780cde70f05a8"
 
 [[projects]]
-  digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
   name = "github.com/inconshreveable/mousetrap"
   packages = ["."]
-  pruneopts = ""
   revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
   version = "v1.0"
 
 [[projects]]
-  digest = "1:f6529eee3b36e9c0fc258e06419edf15ef53384cc830ba148f239f33576669fb"
   name = "github.com/italolelis/goupdater"
   packages = [
     ".",
-    "updater",
+    "updater"
   ]
-  pruneopts = ""
   revision = "b69a667181804033302689f78af177cf353a0a01"
   version = "v0.1.0"
 
 [[projects]]
   branch = "master"
-  digest = "1:95abc4eba158a39873bd4fabdee576d0ae13826b550f8b710881d80ae4093a0f"
   name = "github.com/jbenet/go-context"
   packages = ["io"]
-  pruneopts = ""
   revision = "d14ea06fba99483203c19d92cfcd13ebe73135f4"
 
 [[projects]]
   branch = "master"
-  digest = "1:2c5ad58492804c40bdaf5d92039b0cde8b5becd2b7feeb37d7d1cc36a8aa8dbe"
   name = "github.com/kardianos/osext"
   packages = ["."]
-  pruneopts = ""
   revision = "ae77be60afb1dcacde03767a8c37337fad28ac14"
 
 [[projects]]
-  digest = "1:1ce378ab2352c756c6d7a0172c22ecbd387659d32712a4ce3bc474273309a5dc"
+  name = "github.com/kevinburke/ssh_config"
+  packages = ["."]
+  revision = "6cfae18c12b8934b1afba3ce8159476fdef666ba"
+  version = "1.0"
+
+[[projects]]
   name = "github.com/magiconair/properties"
   packages = ["."]
-  pruneopts = ""
   revision = "be5ece7dd465ab0765a9682137865547526d1dfb"
   version = "v1.7.3"
 
 [[projects]]
   branch = "master"
-  digest = "1:46c2c64337672f517d7b6d68efe9e458aeb82fa683a08187fcdd7b22acde3253"
   name = "github.com/mholt/archiver"
   packages = ["."]
-  pruneopts = ""
   revision = "26cf5bb32d07aa4e8d0de15f56ce516f4641d7df"
 
 [[projects]]
   branch = "master"
-  digest = "1:59d11e81d6fdd12a771321696bb22abdd9a94d26ac864787e98c9b419e428734"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
-  pruneopts = ""
   revision = "b8bc1bf767474819792c23f32d8286a45736f1c6"
 
 [[projects]]
   branch = "master"
-  digest = "1:30a2adc78c422ebd23aac9cfece529954d5eacf9ddbe37345f2a17439f8fa849"
   name = "github.com/mitchellh/mapstructure"
   packages = ["."]
-  pruneopts = ""
   revision = "06020f85339e21b2478f756a78e295255ffa4d6a"
 
 [[projects]]
   branch = "master"
-  digest = "1:3bdb4203c03569a564d6a4bd54d84315575cebb2d76471f8676f8ee8c402005e"
   name = "github.com/nwaples/rardecode"
   packages = ["."]
-  pruneopts = ""
   revision = "e06696f847aeda6f39a8f0b7cdff193b7690aef6"
 
 [[projects]]
-  digest = "1:9c740db1f7015dffa093aa5c70862d277fe49f5e92b56ca5d0d69ef0e37c01db"
   name = "github.com/pelletier/go-toml"
   packages = ["."]
-  pruneopts = ""
   revision = "16398bac157da96aa88f98a2df640c7f32af1da2"
   version = "v1.0.1"
 
 [[projects]]
-  digest = "1:52b8f1dc01c8a930900aa94e227b0c4c36e7102a5b124687ff1f88a221590234"
   name = "github.com/pierrec/lz4"
   packages = ["."]
-  pruneopts = ""
   revision = "2fcda4cb7018ce05a25959d2fe08c83e3329f169"
   version = "v1.1"
 
 [[projects]]
-  digest = "1:ff95a6c61f34f32e57833783059c80274d84e9c74e6e315c3dc2e93e9bf3dab9"
   name = "github.com/pierrec/xxHash"
   packages = ["xxHash32"]
-  pruneopts = ""
   revision = "f051bb7f1d1aaf1b5a665d74fb6b0217712c69f7"
   version = "v0.1.1"
 
 [[projects]]
-  digest = "1:7365acd48986e205ccb8652cc746f09c8b7876030d53710ea6ef7d0bd0dcd7ca"
   name = "github.com/pkg/errors"
   packages = ["."]
-  pruneopts = ""
   revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
   version = "v0.8.0"
 
 [[projects]]
-  digest = "1:256484dbbcd271f9ecebc6795b2df8cad4c458dd0f5fd82a8c2fa0c29f233411"
   name = "github.com/pmezard/go-difflib"
   packages = ["difflib"]
-  pruneopts = ""
   revision = "792786c7400a136282c1664665ae0a8db921c6c2"
   version = "v1.0.0"
 
 [[projects]]
   branch = "master"
-  digest = "1:decb2fcc9c8b25116315ac0f7bd76d0dfe1f1e5049de4ffae4de760d762a1bd4"
   name = "github.com/sergi/go-diff"
   packages = ["diffmatchpatch"]
-  pruneopts = ""
   revision = "feef008d51ad2b3778f85d387ccf91735543008d"
 
 [[projects]]
-  digest = "1:3ac248add5bb40a3c631c5334adcd09aa72d15af2768a5bc0274084ea7b2e5ba"
   name = "github.com/sirupsen/logrus"
   packages = ["."]
-  pruneopts = ""
   revision = "f006c2ac4710855cf0f916dd6b77acf6b048dc6e"
   version = "v1.0.3"
 
 [[projects]]
   branch = "master"
-  digest = "1:41c42c90e5937fe6daf97ea35ab201118b2b88cc45ec9f7244f9ecb26c2fa27e"
   name = "github.com/spf13/afero"
   packages = [
     ".",
-    "mem",
+    "mem"
   ]
-  pruneopts = ""
   revision = "e67d870304c4bca21331b02f414f970df13aa694"
 
 [[projects]]
-  digest = "1:6ff9b74bfea2625f805edec59395dc37e4a06458dd3c14e3372337e3d35a2ed6"
   name = "github.com/spf13/cast"
   packages = ["."]
-  pruneopts = ""
   revision = "acbeb36b902d72a7a4c18e8f3241075e7ab763e4"
   version = "v1.1.0"
 
 [[projects]]
   branch = "master"
-  digest = "1:2208a80fc3259291e43b30f42f844d18f4218036dff510f42c653ec9890d460a"
   name = "github.com/spf13/cobra"
   packages = ["."]
-  pruneopts = ""
   revision = "7b2c5ac9fc04fc5efafb60700713d4fa609b777b"
 
 [[projects]]
   branch = "master"
-  digest = "1:5cb42b990db5dc48b8bc23b6ee77b260713ba3244ca495cd1ed89533dc482a49"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
-  pruneopts = ""
   revision = "12bd96e66386c1960ab0f74ced1362f66f552f7b"
 
 [[projects]]
-  digest = "1:261bc565833ef4f02121450d74eb88d5ae4bd74bfe5d0e862cddb8550ec35000"
   name = "github.com/spf13/pflag"
   packages = ["."]
-  pruneopts = ""
   revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:59354ad53dfe6ed1b941844cb029cd37c0377598eec3a0d49c03aee2375ef9c4"
   name = "github.com/spf13/viper"
   packages = ["."]
-  pruneopts = ""
   revision = "25b30aa063fc18e48662b86996252eabdcf2f0c7"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:b1861b9a1aa0801b0b62945ed7477c1ab61a4bd03b55dfbc27f6d4f378110c8c"
   name = "github.com/src-d/gcfg"
   packages = [
     ".",
     "scanner",
     "token",
-    "types",
+    "types"
   ]
-  pruneopts = ""
   revision = "f187355171c936ac84a82793659ebb4936bc1c23"
   version = "v1.3.0"
 
 [[projects]]
-  digest = "1:711eebe744c0151a9d09af2315f0bb729b2ec7637ef4c410fa90a18ef74b65b6"
   name = "github.com/stretchr/objx"
   packages = ["."]
-  pruneopts = ""
   revision = "477a77ecc69700c7cdeb1fa9e129548e1c1c393c"
   version = "v0.1.1"
 
 [[projects]]
-  digest = "1:381bcbeb112a51493d9d998bbba207a529c73dbb49b3fd789e48c63fac1f192c"
   name = "github.com/stretchr/testify"
   packages = [
     "assert",
-    "mock",
+    "mock"
   ]
-  pruneopts = ""
   revision = "ffdc059bfe9ce6a4e144ba849dbedead332c6053"
   version = "v1.3.0"
 
 [[projects]]
-  digest = "1:ee723e6a1962a196eeba1b24f82af61a4f60f8821d7aa96d48e787f8337bcffc"
   name = "github.com/ulikunitz/xz"
   packages = [
     ".",
     "internal/hash",
     "internal/xlog",
-    "lzma",
+    "lzma"
   ]
-  pruneopts = ""
   revision = "0c6b41e72360850ca4f98dc341fd999726ea007f"
   version = "v0.5.4"
 
 [[projects]]
-  digest = "1:172f94a6b3644a8f9e6b5e5b7fc9fe1e42d424f52a0300b2e7ab1e57db73f85d"
   name = "github.com/xanzy/ssh-agent"
   packages = ["."]
-  pruneopts = ""
   revision = "6a3e2ff9e7c564f36873c2e36413f634534f1c44"
   version = "v0.2.1"
 
 [[projects]]
   branch = "master"
-  digest = "1:1fdc053eea4187f76186ecd43bad5d0f5f808973398231651a2d22ea421aabd2"
   name = "golang.org/x/crypto"
   packages = [
+    "cast5",
     "curve25519",
     "ed25519",
     "ed25519/internal/edwards25519",
+    "openpgp",
+    "openpgp/armor",
+    "openpgp/elgamal",
+    "openpgp/errors",
+    "openpgp/packet",
+    "openpgp/s2k",
     "ssh",
     "ssh/agent",
     "ssh/knownhosts",
-    "ssh/terminal",
+    "ssh/terminal"
   ]
-  pruneopts = ""
   revision = "541b9d50ad47e36efd8fb423e938e59ff1691f68"
 
 [[projects]]
   branch = "master"
-  digest = "1:6566ccb4bc1f6ba66b8c478057c514f51de857230b71c8b333b0d6d4983aea69"
   name = "golang.org/x/net"
   packages = [
     "context",
-    "context/ctxhttp",
+    "context/ctxhttp"
   ]
-  pruneopts = ""
   revision = "aabf50738bcdd9b207582cbe796b59ed65d56680"
 
 [[projects]]
   branch = "master"
-  digest = "1:3607c401db83333983b982a42f9871b6836d67fcf42e26385abd2f9781e48e1b"
   name = "golang.org/x/oauth2"
   packages = [
     ".",
-    "internal",
+    "internal"
   ]
-  pruneopts = ""
   revision = "bb50c06baba3d0c76f9d125c0719093e315b5b44"
 
 [[projects]]
   branch = "master"
-  digest = "1:b2ea75de0ccb2db2ac79356407f8a4cd8f798fe15d41b381c00abf3ae8e55ed1"
   name = "golang.org/x/sync"
   packages = ["errgroup"]
-  pruneopts = ""
   revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
 
 [[projects]]
   branch = "master"
-  digest = "1:592c05f04f63351794bf9ed84492a1057285bd82d0c1eb1972cc200345f00d95"
   name = "golang.org/x/sys"
   packages = [
     "unix",
-    "windows",
+    "windows"
   ]
-  pruneopts = ""
   revision = "8dbc5d05d6edcc104950cc299a1ce6641235bc86"
 
 [[projects]]
   branch = "master"
-  digest = "1:706747bb1e3f870cf0dc52459cb94324cd347142fff3b61db56c0157a5f598d0"
   name = "golang.org/x/text"
   packages = [
     "internal/gen",
@@ -408,13 +347,11 @@
     "internal/ucd",
     "transform",
     "unicode/cldr",
-    "unicode/norm",
+    "unicode/norm"
   ]
-  pruneopts = ""
   revision = "c01e4764d870b77f8abe5096ee19ad20d80e8075"
 
 [[projects]]
-  digest = "1:934fb8966f303ede63aa405e2c8d7f0a427a05ea8df335dfdc1833dd4d40756f"
   name = "google.golang.org/appengine"
   packages = [
     "internal",
@@ -423,33 +360,30 @@
     "internal/log",
     "internal/remote_api",
     "internal/urlfetch",
-    "urlfetch",
+    "urlfetch"
   ]
-  pruneopts = ""
   revision = "150dc57a1b433e64154302bdc40b6bb8aefa313a"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:e1b484fdba1d9927133fc8b8c52a808d83d20847e630470dbe82bc12429fe76c"
-  name = "gopkg.in/src-d/go-billy.v3"
+  name = "gopkg.in/src-d/go-billy.v4"
   packages = [
     ".",
     "helper/chroot",
     "helper/polyfill",
     "osfs",
-    "util",
+    "util"
   ]
-  pruneopts = ""
-  revision = "c329b7bc7b9d24905d2bc1b85bfa29f7ae266314"
-  version = "v3.1.0"
+  revision = "780403cfc1bc95ff4d07e7b26db40a6186c5326e"
+  version = "v4.3.2"
 
 [[projects]]
-  digest = "1:33a44878d7740876cbc407c114ba7721a98b9041bb9e80397b07c92f1d714f67"
   name = "gopkg.in/src-d/go-git.v4"
   packages = [
     ".",
     "config",
     "internal/revision",
+    "internal/url",
     "plumbing",
     "plumbing/cache",
     "plumbing/filemode",
@@ -477,7 +411,7 @@
     "plumbing/transport/ssh",
     "storage",
     "storage/filesystem",
-    "storage/filesystem/internal/dotgit",
+    "storage/filesystem/dotgit",
     "storage/memory",
     "utils/binary",
     "utils/diff",
@@ -486,47 +420,25 @@
     "utils/merkletrie/filesystem",
     "utils/merkletrie/index",
     "utils/merkletrie/internal/frame",
-    "utils/merkletrie/noder",
+    "utils/merkletrie/noder"
   ]
-  pruneopts = ""
-  revision = "f9879dd043f84936a1f8acb8a53b74332a7ae135"
+  revision = "v4.10.0"
 
 [[projects]]
-  digest = "1:d07c27023e193880fb8a8ca112c63cbb3fc5bc4264103da554f4181e785da54e"
   name = "gopkg.in/warnings.v0"
   packages = ["."]
-  pruneopts = ""
   revision = "8a331561fe74dadba6edfc59f3be66c22c3b065d"
   version = "v0.1.1"
 
 [[projects]]
   branch = "v2"
-  digest = "1:81314a486195626940617e43740b4fa073f265b0715c9f54ce2027fee1cb5f61"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
-  pruneopts = ""
   revision = "eb3733d160e74a9c7e442f435eb3bea458e1d19f"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  input-imports = [
-    "github.com/dghubble/sling",
-    "github.com/google/go-github/github",
-    "github.com/hashicorp/errwrap",
-    "github.com/hashicorp/go-multierror",
-    "github.com/italolelis/goupdater",
-    "github.com/mitchellh/go-homedir",
-    "github.com/sirupsen/logrus",
-    "github.com/spf13/cobra",
-    "github.com/spf13/viper",
-    "github.com/stretchr/testify/assert",
-    "github.com/stretchr/testify/mock",
-    "golang.org/x/oauth2",
-    "golang.org/x/sync/errgroup",
-    "gopkg.in/src-d/go-git.v4",
-    "gopkg.in/src-d/go-git.v4/plumbing",
-    "gopkg.in/src-d/go-git.v4/storage/memory",
-  ]
+  inputs-digest = "4105286dfc92fa59ee7d55b5b343d2e2fe2170124b3d9b915194d1d638f7c141"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 84a4ba1..9ed279b 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -34,7 +34,7 @@
 
 [[constraint]]
   name = "gopkg.in/src-d/go-git.v4"
-  revision = "f9879dd043f84936a1f8acb8a53b74332a7ae135"
+  revision = "v4.10.0"
 
 [[constraint]]
   branch = "master"