diff --git a/.eslintrc.json b/.eslintrc.json
index d2d372b..45a7dae 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -41,6 +41,7 @@
     "keyword-spacing": 1, // enforce consistent spacing between keys and values in object literal properties
     "linebreak-style": 1, // enforce consistent linebreak style
     "lines-between-class-members": 1, // require or disallow an empty line between class members
+    "new-parens": ["warn"], // require parens when invoking constructors
     "no-multiple-empty-lines": ["warn", {"max": 1}], // disallow multiple empty lines
     "no-trailing-spaces": 1, // disallow trailing whitespace at the end of lines
     "no-var": 1, // require let or const instead of var
diff --git a/index.js b/index.js
index 12cdf53..c831190 100644
--- a/index.js
+++ b/index.js
@@ -37,7 +37,7 @@ if (cluster.isMaster) {
   cluster.on('fork', worker => log.info('cluster', `Forked worker #${worker.id} [pid:${worker.process.pid}]`));
   cluster.on('exit', worker => {
     log.warn('cluster', `Worker #${worker.id} [pid:${worker.process.pid}] died`);
-    setTimeout(() => cluster.fork(), 5000);
+    cluster.fork();
   });
 } else {
   require('./src');
diff --git a/package-lock.json b/package-lock.json
index 466dc0b..c2eb2ac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,24 +24,19 @@
         "js-tokens": "^4.0.0"
       }
     },
-    "@mattiasbuelens/web-streams-polyfill": {
-      "version": "0.3.1",
-      "resolved": "https://registry.npmjs.org/@mattiasbuelens/web-streams-polyfill/-/web-streams-polyfill-0.3.1.tgz",
-      "integrity": "sha512-IW+tCurEH2NL2tA3KKFAMXa90WWmTJMZksnQWMABe3bMijV7hEiOLthy4tKGTnUTV8qVf8WTCApiGmKb75Bxkg=="
-    },
     "@sinonjs/commons": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.3.1.tgz",
-      "integrity": "sha512-rgmZk5CrBGAMATk0HlHOFvo8V44/r+On6cKS80tqid0Eljd+fFBWBOXZp9H2/EB3faxdNdzXTx6QZIKLkbJ7mA==",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.4.0.tgz",
+      "integrity": "sha512-9jHK3YF/8HtJ9wCAbG+j8cD0i0+ATS9A7gXFqS36TblLPNy6rEEc+SB0imo91eCboGaBYGV/MT1/br/J+EE7Tw==",
       "dev": true,
       "requires": {
         "type-detect": "4.0.8"
       }
     },
     "@sinonjs/formatio": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.0.tgz",
-      "integrity": "sha512-hskkZG4qB0HgsxrPUlnk2EiIyBwntM+ETIxCha/gidl172MCfdosNezB5706ciS5P2VhueM7MoACWwMc4A4gMQ==",
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.1.tgz",
+      "integrity": "sha512-tsHvOB24rvyvV2+zKMmPkZ7dXX6LSLKZ7aOtXY6Edklp0uRcgGpOsQTTGTcWViFyx4uhWc6GV8QdnALbIbIdeQ==",
       "dev": true,
       "requires": {
         "@sinonjs/commons": "^1",
@@ -49,9 +44,9 @@
       }
     },
     "@sinonjs/samsam": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.2.0.tgz",
-      "integrity": "sha512-j5F1rScewLtx6pbTK0UAjA3jJj4RYiSKOix53YWv+Jzy/AZ69qHxUpU8fwVLjyKbEEud9QrLpv6Ggs7WqTimYw==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.3.1.tgz",
+      "integrity": "sha512-wRSfmyd81swH0hA1bxJZJ57xr22kC07a1N4zuIL47yTS04bDk6AoCkczcqHEjcRPmJ+FruGJ9WBQiJwMtIElFw==",
       "dev": true,
       "requires": {
         "@sinonjs/commons": "^1.0.2",
@@ -86,18 +81,10 @@
       "integrity": "sha512-HJ7CfNHrfJLlNTzIEUTj43LNWGkqpRLxm3YjAlcD0ACydk9XynzYsCBHxut+iqt+1aBXkx9UP/w/ZqMr13XIzg==",
       "dev": true
     },
-    "address-rfc2822": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/address-rfc2822/-/address-rfc2822-2.0.4.tgz",
-      "integrity": "sha1-Lb07jWwt4elXwahUncAS1Au8NDE=",
-      "requires": {
-        "email-addresses": "^3.0.0"
-      }
-    },
     "ajv": {
-      "version": "6.9.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.9.2.tgz",
-      "integrity": "sha512-4UFy0/LgDo7Oa/+wOAlj44tp9K78u38E5/359eSrqEp1Z5PdVfimCcs7SluXMP755RUQu6d2b4AvF0R1C9RZjg==",
+      "version": "6.10.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
+      "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
       "dev": true,
       "requires": {
         "fast-deep-equal": "^2.0.1",
@@ -106,6 +93,12 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ansi-colors": {
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.3.tgz",
+      "integrity": "sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==",
+      "dev": true
+    },
     "ansi-escapes": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.2.0.tgz",
@@ -147,10 +140,6 @@
       "integrity": "sha1-z+nYwmYoudxa7MYqn12PHzUsEZU=",
       "dev": true
     },
-    "asmcrypto.js": {
-      "version": "github:openpgpjs/asmcrypto#6e4e407b9b8ae317925a9e677cc7b4de3e447e83",
-      "from": "github:openpgpjs/asmcrypto#6e4e407b9b8ae317925a9e677cc7b4de3e447e83"
-    },
     "asn1.js": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-5.0.1.tgz",
@@ -193,11 +182,6 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
-    "base64-js": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.0.tgz",
-      "integrity": "sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw=="
-    },
     "bn.js": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
@@ -213,11 +197,6 @@
         "concat-map": "0.0.1"
       }
     },
-    "brorand": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
-      "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8="
-    },
     "browser-stdout": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
@@ -229,15 +208,6 @@
       "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.1.tgz",
       "integrity": "sha512-jCGVYLoYMHDkOsbwJZBCqwMHyH4c+wzgI9hG7Z6SZJRXWr+x58pdIbm2i9a/jFGCkRJqRUr8eoI7lDWa0hTkxg=="
     },
-    "buffer": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.2.1.tgz",
-      "integrity": "sha512-c+Ko0loDaFfuPWiL02ls9Xd3GO3cPVmUobQ6t3rXNUk304u6hGq+8N/kFi+QEIKhzK3uwolVhLzszmfLmMLnqg==",
-      "requires": {
-        "base64-js": "^1.0.2",
-        "ieee754": "^1.1.4"
-      }
-    },
     "bytes": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
@@ -253,9 +223,15 @@
       }
     },
     "callsites": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.0.0.tgz",
-      "integrity": "sha512-tWnkwu9YEq2uzlBDI4RcLn8jrFvF9AOi8PxDNU3hZZjJcjkcRAq3vCI+vZcg1SuxISDYe86k9VZFwAxDiJGoAw==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
+      "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
+      "dev": true
+    },
+    "camelcase": {
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
       "dev": true
     },
     "chai": {
@@ -319,6 +295,17 @@
       "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
       "dev": true
     },
+    "cliui": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
+      "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
+      "dev": true,
+      "requires": {
+        "string-width": "^2.1.1",
+        "strip-ansi": "^4.0.0",
+        "wrap-ansi": "^2.0.0"
+      }
+    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -335,6 +322,12 @@
         "type-is": "^1.6.16"
       }
     },
+    "code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true
+    },
     "color": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/color/-/color-3.0.0.tgz",
@@ -386,26 +379,18 @@
       }
     },
     "combined-stream": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
-      "integrity": "sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==",
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
       "dev": true,
       "requires": {
         "delayed-stream": "~1.0.0"
       }
     },
-    "commander": {
-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.8.1.tgz",
-      "integrity": "sha1-Br42f+v9oMMwqh4qBy09yXYkJdQ=",
-      "requires": {
-        "graceful-readlink": ">= 1.0.0"
-      }
-    },
     "component-emitter": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
-      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
+      "integrity": "sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==",
       "dev": true
     },
     "concat-map": {
@@ -415,9 +400,9 @@
       "dev": true
     },
     "config": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/config/-/config-3.0.1.tgz",
-      "integrity": "sha512-TBNrrk2b6AybUohqXw2AydglFBL9b/+1GG93Di6Fm6x1SyVJ5PYgo+mqY2X0KpU9m0PJDSbFaC5H95utSphtLw==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/config/-/config-3.1.0.tgz",
+      "integrity": "sha512-t6oDeNQbsIWa+D/KF4959TANzjSHLv1BA/hvL8tHEA3OUSWgBXELKaONSI6nr9oanbKs0DXonjOWLcrtZ3yTAA==",
       "requires": {
         "json5": "^1.0.1"
       }
@@ -477,6 +462,12 @@
         "ms": "^2.1.1"
       }
     },
+    "decamelize": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
+      "dev": true
+    },
     "deep-eql": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
@@ -497,6 +488,15 @@
       "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
       "dev": true
     },
+    "define-properties": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.3.tgz",
+      "integrity": "sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==",
+      "dev": true,
+      "requires": {
+        "object-keys": "^1.0.12"
+      }
+    },
     "delayed-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
@@ -548,24 +548,6 @@
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
       "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
     },
-    "elliptic": {
-      "version": "github:openpgpjs/elliptic#ad81845f693effa5b4b6d07db2e82112de222f48",
-      "from": "github:openpgpjs/elliptic#ad81845f693effa5b4b6d07db2e82112de222f48",
-      "requires": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
-        "hash.js": "^1.0.0",
-        "hmac-drbg": "^1.0.0",
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.0"
-      }
-    },
-    "email-addresses": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/email-addresses/-/email-addresses-3.0.3.tgz",
-      "integrity": "sha512-kUlSC06PVvvjlMRpNIl3kR1NRXLEe86VQ7N0bQeaCZb2g+InShCeHQp/JvyYNTugMnRN2NvJhHlc3q12MWbbpg=="
-    },
     "emoji-regex": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
@@ -580,6 +562,15 @@
         "env-variable": "0.0.x"
       }
     },
+    "end-of-stream": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
+      "integrity": "sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==",
+      "dev": true,
+      "requires": {
+        "once": "^1.4.0"
+      }
+    },
     "env-variable": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/env-variable/-/env-variable-0.0.5.tgz",
@@ -590,6 +581,31 @@
       "resolved": "https://registry.npmjs.org/error-inject/-/error-inject-1.0.0.tgz",
       "integrity": "sha1-4rPZG1Su1nLzCdlQ0VSFD6EdTzc="
     },
+    "es-abstract": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.13.0.tgz",
+      "integrity": "sha512-vDZfg/ykNxQVwup/8E1BZhVzFfBxs9NqMzGcvIJrqg5k2/5Za2bWo40dK2J1pgLngZ7c+Shh8lwYtLGyrwPutg==",
+      "dev": true,
+      "requires": {
+        "es-to-primitive": "^1.2.0",
+        "function-bind": "^1.1.1",
+        "has": "^1.0.3",
+        "is-callable": "^1.1.4",
+        "is-regex": "^1.0.4",
+        "object-keys": "^1.0.12"
+      }
+    },
+    "es-to-primitive": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.2.0.tgz",
+      "integrity": "sha512-qZryBOJjV//LaxLTV6UC//WewneB3LcXOL9NP++ozKVXsIIIpm/2c13UDiD9Jp2eThsecw9m3jPqDwTyobcdbg==",
+      "dev": true,
+      "requires": {
+        "is-callable": "^1.1.4",
+        "is-date-object": "^1.0.1",
+        "is-symbol": "^1.0.2"
+      }
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -602,9 +618,9 @@
       "dev": true
     },
     "eslint": {
-      "version": "5.15.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-5.15.0.tgz",
-      "integrity": "sha512-xwG7SS5JLeqkiR3iOmVgtF8Y6xPdtr6AAsN6ph7Q6R/fv+3UlKYoika8SmNzmb35qdRF+RfTY35kMEdtbi+9wg==",
+      "version": "5.16.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-5.16.0.tgz",
+      "integrity": "sha512-S3Rz11i7c8AA5JPv7xAH+dOyq/Cu/VXHiHXBPOU1k/JAM5dXqQPt3qcrhpHSorXmrpu2g0gkIBVXAqCpzfoZIg==",
       "dev": true,
       "requires": {
         "@babel/code-frame": "^7.0.0",
@@ -613,7 +629,7 @@
         "cross-spawn": "^6.0.5",
         "debug": "^4.0.1",
         "doctrine": "^3.0.0",
-        "eslint-scope": "^4.0.2",
+        "eslint-scope": "^4.0.3",
         "eslint-utils": "^1.3.1",
         "eslint-visitor-keys": "^1.0.0",
         "espree": "^5.0.1",
@@ -627,7 +643,7 @@
         "import-fresh": "^3.0.0",
         "imurmurhash": "^0.1.4",
         "inquirer": "^6.2.2",
-        "js-yaml": "^3.12.0",
+        "js-yaml": "^3.13.0",
         "json-stable-stringify-without-jsonify": "^1.0.1",
         "levn": "^0.3.0",
         "lodash": "^4.17.11",
@@ -646,9 +662,9 @@
       }
     },
     "eslint-scope": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-4.0.2.tgz",
-      "integrity": "sha512-5q1+B/ogmHl8+paxtOKx38Z8LtWkVGuNt3+GQNErqwLl6ViNp/gdJGMCjZNxZ8j/VYjDNZ2Fo+eQc1TAVPIzbg==",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-4.0.3.tgz",
+      "integrity": "sha512-p7VutNr1O/QrxysMo3E45FjYDTeXBy0iTltPFNSqKAIfjDSXC+4dj+qfyuD8bfAXrW/y6lW3O76VaYNPKfpKrg==",
       "dev": true,
       "requires": {
         "esrecurse": "^4.1.0",
@@ -714,6 +730,21 @@
       "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=",
       "dev": true
     },
+    "execa": {
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@@ -2213,6 +2483,21 @@
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@@ -2306,6 +2638,124 @@
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diff --git a/package.json b/package.json
index ff6c1e5..9c241f9 100644
--- a/package.json
+++ b/package.json
@@ -22,22 +22,22 @@
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-    "openpgp": "github:mailvelope/openpgpjs#fix_user_verify_dist",
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+    "supertest": "^4.0.2"
   }
 }