diff --git a/Cargo.lock b/Cargo.lock
index 09febfa..6c1659e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -135,9 +135,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.60"
+version = "1.0.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef611cc68ff783f18535d77ddd080185275713d852c4f5cbb6122c462a7a825c"
+checksum = "ed67cbde08356238e75fc4656be4749481eeffb09e19f320a25237d5221c985d"
 
 [[package]]
 name = "cfg-if"
@@ -147,13 +147,15 @@ checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
 [[package]]
 name = "chrono"
-version = "0.4.15"
+version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "942f72db697d8767c22d46a598e01f2d3b475501ea43d0db4f16d90259182d0b"
+checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
 dependencies = [
+ "libc",
  "num-integer",
  "num-traits",
  "time",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -348,9 +350,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.9.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00d63df3d41950fb462ed38308eea019113ad1508da725bbedcd0fa5a85ef5f7"
+checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
 
 [[package]]
 name = "headers"
@@ -379,9 +381,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.15"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3deed196b6e7f9e44a2ae8d94225d80302d81208b1bb673fd21fe634645c85a9"
+checksum = "5aca5565f760fb5b220e499d72710ed156fdb74e631659e99377d9ebfbd13ae8"
 dependencies = [
  "libc",
 ]
@@ -414,10 +416,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
 
 [[package]]
-name = "hyper"
-version = "0.13.7"
+name = "httpdate"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e68a8dd9716185d9e64ea473ea6ef63529252e3e27623295a0378a19665d5eb"
+checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
+
+[[package]]
+name = "hyper"
+version = "0.13.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f3afcfae8af5ad0576a31e768415edb627824129e8e5a29b8bfccb2f234e835"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -427,10 +435,10 @@ dependencies = [
  "http",
  "http-body",
  "httparse",
+ "httpdate",
  "itoa",
  "pin-project",
  "socket2",
- "time",
  "tokio 0.2.22",
  "tower-service",
  "tracing",
@@ -491,9 +499,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.77"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2f96b10ec2560088a8e76961b00d47107b3a625fecb76dedb29ee7ccbf98235"
+checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
 
 [[package]]
 name = "log"
@@ -545,21 +553,23 @@ dependencies = [
  "kernel32-sys",
  "libc",
  "log",
- "miow",
+ "miow 0.2.1",
  "net2",
  "slab",
  "winapi 0.2.8",
 ]
 
 [[package]]
-name = "mio-uds"
-version = "0.6.8"
+name = "mio"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afcb699eb26d4332647cc848492bbc15eafb26f08d0304550d5aa1f612e066f0"
+checksum = "e53a6ea5f38c0a48ca42159868c6d8e1bd56c0451238856cc08d58563643bdc3"
 dependencies = [
- "iovec",
  "libc",
- "mio",
+ "log",
+ "miow 0.3.5",
+ "ntapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -574,6 +584,16 @@ dependencies = [
  "ws2_32-sys",
 ]
 
+[[package]]
+name = "miow"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07b88fb9795d4d36d62a012dfbf49a8f5cf12751f36d31a9dbe66d528e58979e"
+dependencies = [
+ "socket2",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "net2"
 version = "0.2.35"
@@ -585,6 +605,15 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "ntapi"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a31937dea023539c72ddae0e3571deadc1414b300483fa7aaec176168cfa9d2"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.43"
@@ -634,18 +663,18 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "pin-project"
-version = "0.4.23"
+version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca4433fff2ae79342e497d9f8ee990d174071408f28f726d6d83af93e58e48aa"
+checksum = "2ffbc8e94b38ea3d2d8ba92aea2983b503cd75d0888d75b86bb37970b5698e15"
 dependencies = [
  "pin-project-internal",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.23"
+version = "0.4.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c0e815c3ee9a031fdf5af21c10aa17c573c9c6a566328d99e3936c34e36461f"
+checksum = "65ad2ae56b6abe3a1ee25f15ee605bacadb9a764edaba9c2bf4103800d4a1895"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -654,9 +683,9 @@ dependencies = [
 
 [[package]]
 name = "pin-project-lite"
-version = "0.1.7"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "282adbf10f2698a7a77f8e983a74b2d18176c19a7fd32a45446139ae7b02b715"
+checksum = "e555d9e657502182ac97b539fb3dae8b79cda19e3e4f8ffb5e8de4f18df93c95"
 
 [[package]]
 name = "pin-utils"
@@ -666,9 +695,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.18"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d36492546b6af1463394d46f0c834346f31548646f6ba10849802c9c9a27ac33"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 
 [[package]]
 name = "proc-macro-hack"
@@ -684,9 +713,9 @@ checksum = "eba180dafb9038b050a4c280019bbedf9f2467b61e5d892dcad585bb57aadc5a"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.21"
+version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36e28516df94f3dd551a587da5357459d9b36d945a7c37c3557928c1c2ff2a2c"
+checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
 dependencies = [
  "unicode-xid",
 ]
@@ -720,18 +749,18 @@ checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
 
 [[package]]
 name = "serde"
-version = "1.0.116"
+version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96fe57af81d28386a513cbc6858332abc6117cfdb5999647c6444b8f43a370a5"
+checksum = "b88fa983de7720629c9387e9f517353ed404164b1e482c970a90c1a4aaf7dc1a"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.116"
+version = "1.0.117"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f630a6370fd8e457873b4bd2ffdae75408bc291ba72be773772a4c2a065d9ae8"
+checksum = "cbd1ae72adb44aab48f325a02444a5fc079349a8d804c1fc922aed3f7454c74e"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -740,9 +769,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.57"
+version = "1.0.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "164eacbdb13512ec2745fb09d51fd5b22b0d65ed294a1dcf7285a360c80a675c"
+checksum = "dcac07dbffa1c65e7f816ab9eba78eb142c6d44410f4eeba1e26e4f5dfa56b95"
 dependencies = [
  "itoa",
  "ryu",
@@ -809,9 +838,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "syn"
-version = "1.0.41"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6690e3e9f692504b941dc6c3b188fd28df054f7fb8469ab40680df52fdcc842b"
+checksum = "e03e57e4fcbfe7749842d53e24ccb9aa12b7252dbe5e91d2acad31834c8b8fdd"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -856,7 +885,7 @@ dependencies = [
  "iovec",
  "lazy_static",
  "memchr",
- "mio",
+ "mio 0.6.22",
  "pin-project-lite",
  "slab",
 ]
@@ -864,17 +893,16 @@ dependencies = [
 [[package]]
 name = "tokio"
 version = "0.3.0"
-source = "git+https://github.com/tokio-rs/tokio?rev=3fd043931e6d37f211e682980edc6e12e9d4fc54#3fd043931e6d37f211e682980edc6e12e9d4fc54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7137dbb0abee577362ccdc7df21605cfcbb949243aeab47dac9ea6ef7d830e21"
 dependencies = [
  "bytes",
  "fnv",
  "futures-core",
- "iovec",
  "lazy_static",
  "libc",
  "memchr",
- "mio",
- "mio-uds",
+ "mio 0.7.3",
  "num_cpus",
  "pin-project-lite",
  "signal-hook-registry",
@@ -886,7 +914,8 @@ dependencies = [
 [[package]]
 name = "tokio-macros"
 version = "0.3.0"
-source = "git+https://github.com/tokio-rs/tokio?rev=3fd043931e6d37f211e682980edc6e12e9d4fc54#3fd043931e6d37f211e682980edc6e12e9d4fc54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d48caa7b66c7a6ec943edf78d21a594fbeb24e536c781da67d5c32edec54103f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -910,7 +939,8 @@ dependencies = [
 [[package]]
 name = "tokio-util"
 version = "0.4.0"
-source = "git+https://github.com/tokio-rs/tokio?rev=3fd043931e6d37f211e682980edc6e12e9d4fc54#3fd043931e6d37f211e682980edc6e12e9d4fc54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24793699f4665ba0416ed287dc794fe6b11a4aa5e4e95b58624f45f6c46b97d4"
 dependencies = [
  "bytes",
  "futures-core",
@@ -938,20 +968,21 @@ checksum = "e987b6bf443f4b5b3b6f38704195592cca41c5bb7aedd3c3693c7081f8289860"
 
 [[package]]
 name = "tracing"
-version = "0.1.19"
+version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d79ca061b032d6ce30c660fded31189ca0b9922bf483cd70759f13a2d86786c"
+checksum = "b0987850db3733619253fe60e17cb59b82d37c7e6c0236bb81e4d6b87c879f27"
 dependencies = [
  "cfg-if",
  "log",
+ "pin-project-lite",
  "tracing-core",
 ]
 
 [[package]]
 name = "tracing-core"
-version = "0.1.16"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bcf46c1f1f06aeea2d6b81f3c863d0930a596c86ad1920d4e5bad6dd1d7119a"
+checksum = "f50de3927f93d202783f4513cda820ab47ef17f624b03c096e86ef00c67e6b5f"
 dependencies = [
  "lazy_static",
 ]