diff --git a/lib/helper/pino.js b/lib/helper/pino.js
index f4399b4..9d539b5 100644
--- a/lib/helper/pino.js
+++ b/lib/helper/pino.js
@@ -15,7 +15,6 @@ switch (process.env.NODE_ENV) {
     break;
 
   default:
-    level = 'info';
     break;
 }
 
diff --git a/package.json b/package.json
index 80113e1..6696301 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "internetmarke",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "A node wrapper for the Internetmarke web service of the Deutsche Post.",
   "keywords": [
     "internetmarke",
diff --git a/yarn.lock b/yarn.lock
index 85b26f6..710ab61 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -44,15 +44,11 @@ ansi-styles@^3.2.0:
     color-convert "^1.9.0"
 
 argparse@^1.0.7:
-  version "1.0.9"
-  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.9.tgz#73d83bc263f86e97f8cc4f6bae1b0e90a7d22c86"
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
   dependencies:
     sprintf-js "~1.0.2"
 
-asn1@0.1.11:
-  version "0.1.11"
-  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.1.11.tgz#559be18376d08a4ec4dbe80877d27818639b2df7"
-
 asn1@~0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.3.tgz#dac8787713c9966849fc8180777ebe9c1ddf3b86"
@@ -61,26 +57,14 @@ assert-plus@1.0.0, assert-plus@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
 
-assert-plus@^0.1.5:
-  version "0.1.5"
-  resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-0.1.5.tgz#ee74009413002d84cec7219c6ac811812e723160"
-
 async@1.x, async@^1.4.0:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
 
-async@~0.9.0:
-  version "0.9.2"
-  resolved "https://registry.yarnpkg.com/async/-/async-0.9.2.tgz#aea74d5e61c1f899613bf64bda66d4c78f2fd17d"
-
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
 
-aws-sign2@~0.5.0:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.5.0.tgz#c57103f7a17fc037f02d7c2e64b602ea223f7d63"
-
 aws-sign2@~0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
@@ -103,22 +87,10 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-bl@~0.9.0:
-  version "0.9.5"
-  resolved "https://registry.yarnpkg.com/bl/-/bl-0.9.5.tgz#c06b797af085ea00bc527afc8efcf11de2232054"
-  dependencies:
-    readable-stream "~1.0.26"
-
 bluebird@^3.5.0, bluebird@~3.5.0:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
 
-boom@0.4.x:
-  version "0.4.2"
-  resolved "https://registry.yarnpkg.com/boom/-/boom-0.4.2.tgz#7a636e9ded4efcefb19cef4947a3c67dfaee911b"
-  dependencies:
-    hoek "0.9.x"
-
 boom@4.x.x:
   version "4.3.1"
   resolved "https://registry.yarnpkg.com/boom/-/boom-4.3.1.tgz#4f8a3005cb4a7e3889f749030fd25b96e01d2e31"
@@ -150,10 +122,6 @@ caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
 
-caseless@~0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.6.0.tgz#8167c1ab8397fb5bb95f96d28e5a81c50f247ac4"
-
 catharsis@~0.8.9:
   version "0.8.9"
   resolved "https://registry.yarnpkg.com/catharsis/-/catharsis-0.8.9.tgz#98cc890ca652dd2ef0e70b37925310ff9e90fc8b"
@@ -191,13 +159,6 @@ co@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
 
-codecov.io@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/codecov.io/-/codecov.io-0.0.1.tgz#25ea2b095e1e9ea11872bdfa5842118130df78b1"
-  dependencies:
-    request "2.42.0"
-    urlgrey "0.4.0"
-
 color-convert@^1.9.0:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.1.tgz#c1261107aeb2f294ebffec9ed9ecad529a6097ed"
@@ -208,18 +169,12 @@ color-name@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
-combined-stream@^1.0.5, combined-stream@~1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.5.tgz#938370a57b4a51dea2c77c15d5c5fdf895164009"
+combined-stream@1.0.6, combined-stream@~1.0.5:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.6.tgz#723e7df6e801ac5613113a7e445a9b69cb632818"
   dependencies:
     delayed-stream "~1.0.0"
 
-combined-stream@~0.0.4:
-  version "0.0.7"
-  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-0.0.7.tgz#0137e657baa5a7541c57ac37ac5fc07d73b4dc1f"
-  dependencies:
-    delayed-stream "0.0.5"
-
 commander@2.11.0:
   version "2.11.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
@@ -254,22 +209,12 @@ crypt@~0.0.1:
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/crypt/-/crypt-0.0.2.tgz#88d7ff7ec0dfb86f713dc87bbb42d044d3e6c41b"
 
-cryptiles@0.2.x:
-  version "0.2.2"
-  resolved "https://registry.yarnpkg.com/cryptiles/-/cryptiles-0.2.2.tgz#ed91ff1f17ad13d3748288594f8a48a0d26f325c"
-  dependencies:
-    boom "0.4.x"
-
 cryptiles@3.x.x:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/cryptiles/-/cryptiles-3.1.2.tgz#a89fbb220f5ce25ec56e8c4aa8a4fd7b5b0d29fe"
   dependencies:
     boom "5.x.x"
 
-ctype@0.5.3:
-  version "0.5.3"
-  resolved "https://registry.yarnpkg.com/ctype/-/ctype-0.5.3.tgz#82c18c2461f74114ef16c135224ad0b9144ca12f"
-
 dashdash@^1.12.0:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
@@ -292,22 +237,10 @@ decamelize@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
 
-deep-equal@~0.1.0:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-0.1.2.tgz#b246c2b80a570a47c11be1d9bd1070ec878b87ce"
-
 deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
 
-defined@~0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/defined/-/defined-0.0.0.tgz#f35eea7d705e933baf13b2f03b3f83d921403b3e"
-
-delayed-stream@0.0.5:
-  version "0.0.5"
-  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-0.0.5.tgz#d4b1f43a93e8296dfe02694f4680bc37a313c73f"
-
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
@@ -332,10 +265,6 @@ diff@^3.1.0:
   version "3.4.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.4.0.tgz#b1d85507daf3964828de54b37d0d73ba67dda56c"
 
-duplexer@~0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"
-
 ecc-jsbn@~0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz#0fc73a9ed5f0d53c38193398523ef7e543777505"
@@ -451,28 +380,16 @@ flatstr@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/flatstr/-/flatstr-1.0.5.tgz#5b451b08cbd48e2eac54a2bbe0bf46165aa14be3"
 
-forever-agent@~0.5.0:
-  version "0.5.2"
-  resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.5.2.tgz#6d0e09c4921f94a27f63d3b49c5feff1ea4c5130"
-
 forever-agent@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
 
-form-data@~0.1.0:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/form-data/-/form-data-0.1.4.tgz#91abd788aba9702b1aabfa8bc01031a2ac9e3b12"
-  dependencies:
-    async "~0.9.0"
-    combined-stream "~0.0.4"
-    mime "~1.2.11"
-
 form-data@~2.3.1:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.1.tgz#6fb94fbd71885306d73d15cc497fe4cc4ecd44bf"
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.2.tgz#4970498be604c20c005d4f5c23aecd21d6b49099"
   dependencies:
     asynckit "^0.4.0"
-    combined-stream "^1.0.5"
+    combined-stream "1.0.6"
     mime-types "^2.1.12"
 
 fresh@0.5.2:
@@ -551,15 +468,6 @@ has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
 
-hawk@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/hawk/-/hawk-1.1.1.tgz#87cd491f9b46e4e2aeaca335416766885d2d1ed9"
-  dependencies:
-    boom "0.4.x"
-    cryptiles "0.2.x"
-    hoek "0.9.x"
-    sntp "0.2.x"
-
 hawk@~6.0.2:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/hawk/-/hawk-6.0.2.tgz#af4d914eb065f9b5ce4d9d11c1cb2126eecc3038"
@@ -573,13 +481,9 @@ he@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
-hoek@0.9.x:
-  version "0.9.1"
-  resolved "https://registry.yarnpkg.com/hoek/-/hoek-0.9.1.tgz#3d322462badf07716ea7eb85baf88079cddce505"
-
 hoek@4.x.x:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.0.tgz#72d9d0754f7fe25ca2d01ad8f8f9a9449a89526d"
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.1.tgz#9634502aa12c445dd5a7c5734b572bb8738aacbb"
 
 http-errors@~1.6.2:
   version "1.6.2"
@@ -590,14 +494,6 @@ http-errors@~1.6.2:
     setprototypeof "1.0.3"
     statuses ">= 1.3.1 < 2"
 
-http-signature@~0.10.0:
-  version "0.10.1"
-  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-0.10.1.tgz#4fbdac132559aa8323121e540779c0a012b27e66"
-  dependencies:
-    asn1 "0.1.11"
-    assert-plus "^0.1.5"
-    ctype "0.5.3"
-
 http-signature@~1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
@@ -613,7 +509,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@2.0.3, inherits@^2.0.3, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2, inherits@2.0.3, inherits@^2.0.3, inherits@~2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
 
@@ -706,14 +602,10 @@ json-schema@0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
 
-json-stringify-safe@~5.0.0, json-stringify-safe@~5.0.1:
+json-stringify-safe@~5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
 
-jsonify@~0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
-
 jsprim@^1.2.2:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"
@@ -763,10 +655,8 @@ lodash@^3.10.1:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
 log-driver@^1.2.5:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.6.tgz#ad0e660f56bbc59aeb2784d92854cdfdac55807b"
-  dependencies:
-    codecov.io "0.0.1"
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.7.tgz#63b95021f0702fedfa2c9bb0a24e7797d71871d8"
 
 lolex@^2.2.0, lolex@^2.3.2:
   version "2.3.2"
@@ -777,8 +667,8 @@ longest@^1.0.1:
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
 
 marked@~0.3.6:
-  version "0.3.12"
-  resolved "https://registry.yarnpkg.com/marked/-/marked-0.3.12.tgz#7cf25ff2252632f3fe2406bde258e94eee927519"
+  version "0.3.16"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-0.3.16.tgz#2f188b7dfcfa6540fe9940adaf0f3b791c9a5cba"
 
 md5@^2.2.1:
   version "2.2.1"
@@ -788,28 +678,20 @@ md5@^2.2.1:
     crypt "~0.0.1"
     is-buffer "~1.1.1"
 
-mime-db@~1.30.0:
-  version "1.30.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.30.0.tgz#74c643da2dd9d6a45399963465b26d5ca7d71f01"
+mime-db@~1.33.0:
+  version "1.33.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.33.0.tgz#a3492050a5cb9b63450541e39d9788d2272783db"
 
 mime-types@^2.1.12, mime-types@~2.1.17:
-  version "2.1.17"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.17.tgz#09d7a393f03e995a79f8af857b70a9e0ab16557a"
+  version "2.1.18"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.18.tgz#6f323f60a83d11146f831ff11fd66e2fe5503bb8"
   dependencies:
-    mime-db "~1.30.0"
-
-mime-types@~1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-1.0.2.tgz#995ae1392ab8affcbfcb2641dd054e943c0d5dce"
+    mime-db "~1.33.0"
 
 mime@1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
 
-mime@~1.2.11:
-  version "1.2.11"
-  resolved "https://registry.yarnpkg.com/mime/-/mime-1.2.11.tgz#58203eed86e3a5ef17aed2b7d9ebd47f0a60dd10"
-
 "minimatch@2 || 3", minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
@@ -868,8 +750,8 @@ ms@2.0.0:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
 nise@^1.2.0:
-  version "1.2.4"
-  resolved "https://registry.yarnpkg.com/nise/-/nise-1.2.4.tgz#89834e8231e636a552c242bd0111ed324d1d5128"
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.2.5.tgz#a143371b65014b6807d3a6e6b4556063f3a53363"
   dependencies:
     "@sinonjs/formatio" "^2.0.0"
     just-extend "^1.1.27"
@@ -877,20 +759,12 @@ nise@^1.2.0:
     path-to-regexp "^1.7.0"
     text-encoding "^0.6.4"
 
-node-uuid@~1.4.0:
-  version "1.4.8"
-  resolved "https://registry.yarnpkg.com/node-uuid/-/node-uuid-1.4.8.tgz#b040eb0923968afabf8d32fb1f17f1167fdab907"
-
 nopt@3.x:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
   dependencies:
     abbrev "1"
 
-oauth-sign@~0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.4.0.tgz#f22956f31ea7151a821e5f2fb32c113cad8b9f69"
-
 oauth-sign@~0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
@@ -959,10 +833,6 @@ prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
 
-process-nextick-args@~1.0.6:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-1.0.7.tgz#150e20b756590ad3f91093f25a4f2ad8bff30ba3"
-
 process-nextick-args@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.0.tgz#a37d732f4271b4ab1ad070d35508e8290788ffaa"
@@ -978,10 +848,6 @@ punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
-qs@~1.2.0:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-1.2.2.tgz#19b57ff24dc2a99ce1f8bdf6afcda59f8ef61f88"
-
 qs@~6.5.1:
   version "6.5.1"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
@@ -996,7 +862,7 @@ range-parser@~1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.0.tgz#f49be6b487894ddc40dcc94a322f611092e00d5e"
 
-readable-stream@^2.1.5:
+readable-stream@^2.1.5, readable-stream@^2.2.2:
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.4.tgz#c946c3f47fa7d8eabc0b6150f4a12f69a4574071"
   dependencies:
@@ -1008,52 +874,10 @@ readable-stream@^2.1.5:
     string_decoder "~1.0.3"
     util-deprecate "~1.0.1"
 
-readable-stream@^2.2.2:
-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.3.tgz#368f2512d79f9d46fdfc71349ae7878bbc1eb95c"
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.3"
-    isarray "~1.0.0"
-    process-nextick-args "~1.0.6"
-    safe-buffer "~5.1.1"
-    string_decoder "~1.0.3"
-    util-deprecate "~1.0.1"
-
-readable-stream@~1.0.26:
-  version "1.0.34"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
 repeat-string@^1.5.2:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"
 
-request@2.42.0:
-  version "2.42.0"
-  resolved "https://registry.yarnpkg.com/request/-/request-2.42.0.tgz#572bd0148938564040ac7ab148b96423a063304a"
-  dependencies:
-    bl "~0.9.0"
-    caseless "~0.6.0"
-    forever-agent "~0.5.0"
-    json-stringify-safe "~5.0.0"
-    mime-types "~1.0.1"
-    node-uuid "~1.4.0"
-    qs "~1.2.0"
-    tunnel-agent "~0.4.0"
-  optionalDependencies:
-    aws-sign2 "~0.5.0"
-    form-data "~0.1.0"
-    hawk "1.1.1"
-    http-signature "~0.10.0"
-    oauth-sign "~0.4.0"
-    stringstream "~0.0.4"
-    tough-cookie ">=0.12.0"
-
 request@>=2.9.0, request@^2.79.0:
   version "2.83.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.83.0.tgz#ca0b65da02ed62935887808e6f510381034e3356"
@@ -1091,12 +915,6 @@ resolve@1.1.x:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
 
-resumer@~0.0.0:
-  version "0.0.0"
-  resolved "https://registry.yarnpkg.com/resumer/-/resumer-0.0.0.tgz#f1e8f461e4064ba39e82af3cdc2a8c893d076759"
-  dependencies:
-    through "~2.3.4"
-
 right-align@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/right-align/-/right-align-0.1.3.tgz#61339b722fe6a3515689210d24e14c96148613ef"
@@ -1189,8 +1007,8 @@ should@^13.2.1:
     should-util "^1.0.0"
 
 sinon@^4.2.2:
-  version "4.3.0"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.3.0.tgz#cec9b27d5f4e2c63c1a79c9dc1c05d34bb088234"
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-4.4.1.tgz#68819f18be164078d03d4fc40ce0691d1f666eb5"
   dependencies:
     "@sinonjs/formatio" "^2.0.0"
     diff "^3.1.0"
@@ -1200,12 +1018,6 @@ sinon@^4.2.2:
     supports-color "^5.1.0"
     type-detect "^4.0.5"
 
-sntp@0.2.x:
-  version "0.2.4"
-  resolved "https://registry.yarnpkg.com/sntp/-/sntp-0.2.4.tgz#fb885f18b0f3aad189f824862536bceeec750900"
-  dependencies:
-    hoek "0.9.x"
-
 sntp@2.x.x:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/sntp/-/sntp-2.1.0.tgz#2c6cec14fedc2222739caf9b5c3d85d1cc5a2cc8"
@@ -1252,12 +1064,6 @@ split2@^2.2.0:
   dependencies:
     through2 "^2.0.2"
 
-split@~0.2.10:
-  version "0.2.10"
-  resolved "https://registry.yarnpkg.com/split/-/split-0.2.10.tgz#67097c601d697ce1368f418f06cd201cf0521a57"
-  dependencies:
-    through "2"
-
 sprintf-js@~1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
@@ -1284,23 +1090,13 @@ statuses@~1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
 
-stream-combiner@~0.0.2:
-  version "0.0.4"
-  resolved "https://registry.yarnpkg.com/stream-combiner/-/stream-combiner-0.0.4.tgz#4d5e433c185261dde623ca3f44c586bcf5c4ad14"
-  dependencies:
-    duplexer "~0.1.1"
-
-string_decoder@~0.10.x:
-  version "0.10.31"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
-
 string_decoder@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.0.3.tgz#0fc67d7c141825de94282dd536bec6b9bce860ab"
   dependencies:
     safe-buffer "~5.1.0"
 
-stringstream@~0.0.4, stringstream@~0.0.5:
+stringstream@~0.0.5:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
 
@@ -1327,13 +1123,7 @@ supports-color@^3.1.0:
   dependencies:
     has-flag "^1.0.0"
 
-supports-color@^5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.1.0.tgz#058a021d1b619f7ddf3980d712ea3590ce7de3d5"
-  dependencies:
-    has-flag "^2.0.0"
-
-supports-color@^5.2.0:
+supports-color@^5.1.0, supports-color@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.2.0.tgz#b0d5333b1184dd3666cbe5aa0b45c5ac7ac17a4a"
   dependencies:
@@ -1343,19 +1133,6 @@ taffydb@2.6.2:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/taffydb/-/taffydb-2.6.2.tgz#7cbcb64b5a141b6a2efc2c5d2c67b4e150b2a268"
 
-tape@2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/tape/-/tape-2.3.0.tgz#0dfeec709227fbcc9170abe7f046962b271431db"
-  dependencies:
-    deep-equal "~0.1.0"
-    defined "~0.0.0"
-    inherits "~2.0.1"
-    jsonify "~0.0.0"
-    resumer "~0.0.0"
-    split "~0.2.10"
-    stream-combiner "~0.0.2"
-    through "~2.3.4"
-
 text-encoding@^0.6.4:
   version "0.6.4"
   resolved "https://registry.yarnpkg.com/text-encoding/-/text-encoding-0.6.4.tgz#e399a982257a276dae428bb92845cb71bdc26d19"
@@ -1367,11 +1144,7 @@ through2@^2.0.2:
     readable-stream "^2.1.5"
     xtend "~4.0.1"
 
-through@2, through@~2.3.4:
-  version "2.3.8"
-  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
-
-tough-cookie@>=0.12.0, tough-cookie@~2.3.3:
+tough-cookie@~2.3.3:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.3.tgz#0b618a5565b6dea90bf3425d04d55edc475a7561"
   dependencies:
@@ -1383,10 +1156,6 @@ tunnel-agent@^0.6.0:
   dependencies:
     safe-buffer "^5.0.1"
 
-tunnel-agent@~0.4.0:
-  version "0.4.3"
-  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.4.3.tgz#6373db76909fe570e08d73583365ed828a74eeeb"
-
 tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
@@ -1436,12 +1205,6 @@ unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
 
-urlgrey@0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/urlgrey/-/urlgrey-0.4.0.tgz#f065357040fb35c3b311d4e5dc36484d96dbea06"
-  dependencies:
-    tape "2.3.0"
-
 util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"