diff --git a/Cargo.lock b/Cargo.lock
index 7f8741d..e1a01f5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -30,9 +30,9 @@ dependencies = [
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.18"
+version = "0.7.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
+checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
 dependencies = [
  "memchr",
 ]
@@ -48,9 +48,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.41"
+version = "1.0.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15af2628f6890fe2609a3b91bef4c83450512802e59489f9c1cb1fa5df064a61"
+checksum = "595d3cfa7a60d4555cb5067b99f07142a08ea778de5cf993f7b75c7d8fabc486"
 
 [[package]]
 name = "arrayvec"
@@ -60,9 +60,9 @@ checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
 
 [[package]]
 name = "assert_cmd"
-version = "1.0.5"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a88b6bd5df287567ffdf4ddf4d33060048e1068308e5f62d81c6f9824a045a48"
+checksum = "3d20831bd004dda4c7c372c19cdabff369f794a95e955b3f13fe460e3e1ae95f"
 dependencies = [
  "bstr",
  "doc-comment",
@@ -74,9 +74,9 @@ dependencies = [
 
 [[package]]
 name = "assert_fs"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73c485ca248200dfb850a64468a926321865cae0c450eaa7cdbe9ccf4ec49028"
+checksum = "b0ca6aa3066e6c6f0357e056a25fa95e8737f15a04f9aead0b22d0d082a39465"
 dependencies = [
  "doc-comment",
  "globwalk",
@@ -105,9 +105,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "backtrace"
-version = "0.3.60"
+version = "0.3.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7815ea54e4d821e791162e078acbebfd6d8c8939cd559c9335dceb1c8ca7282"
+checksum = "4717cfcbfaa661a0fd48f8453951837ae7e8f81e481fbb136e3202d72805a744"
 dependencies = [
  "addr2line",
  "cc",
@@ -138,9 +138,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "0.2.16"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90682c8d613ad3373e66de8c6411e0ae2ab2571e879d2efbf73558cc66f21279"
+checksum = "a40b47ad93e1a5404e6c18dec46b628214fee441c70f4ab5d6942142cc268a3d"
 dependencies = [
  "lazy_static",
  "memchr",
@@ -156,18 +156,18 @@ checksum = "9c59e7af012c713f529e7a3ee57ce9b31ddd858d4b512923602f74608b009631"
 
 [[package]]
 name = "cast"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57cdfa5d50aad6cb4d44dcab6101a7f79925bd59d82ca42f38a9856a28865374"
+checksum = "4c24dab4283a142afa2fdca129b80ad2c6284e073930f964c3a1293c225ee39a"
 dependencies = [
- "rustc_version",
+ "rustc_version 0.4.0",
 ]
 
 [[package]]
 name = "cc"
-version = "1.0.68"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a72c244c1ff497a746a7e1fb3d14bd08420ecda70c8f25c7112f2781652d787"
+checksum = "e70cc2f62c6ce1868963827bd677764c62d07c3d9a3e1fb1177ee1a9ab199eb2"
 
 [[package]]
 name = "cfg-if"
@@ -218,7 +218,7 @@ version = "0.4.0"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.10.1",
+ "itertools",
  "structopt",
  "unicase",
 ]
@@ -248,16 +248,16 @@ checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
 
 [[package]]
 name = "criterion"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab327ed7354547cc2ef43cbe20ef68b988e70b4b593cbd66a2a61733123a3d23"
+checksum = "1604dafd25fba2fe2d5895a9da139f8dc9b319a5fe5354ca137cbbce4e178d10"
 dependencies = [
  "atty",
  "cast",
  "clap",
  "criterion-plot",
  "csv",
- "itertools 0.10.1",
+ "itertools",
  "lazy_static",
  "num-traits",
  "oorandom",
@@ -274,12 +274,12 @@ dependencies = [
 
 [[package]]
 name = "criterion-plot"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e022feadec601fba1649cfa83586381a4ad31c6bf3a9ab7d408118b05dd9889d"
+checksum = "d00996de9f2f7559f7f4dc286073197f83e92256a59ed395f9aac01fe717da57"
 dependencies = [
  "cast",
- "itertools 0.9.0",
+ "itertools",
 ]
 
 [[package]]
@@ -385,13 +385,14 @@ dependencies = [
 
 [[package]]
 name = "derive_more"
-version = "0.99.14"
+version = "0.99.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5cc7b9cef1e351660e5443924e4f43ab25fbbed3e9a5f052df3677deb4d6b320"
+checksum = "40eebddd2156ce1bb37b20bbe5151340a31828b1f2d22ba4141f3531710e38df"
 dependencies = [
  "convert_case",
  "proc-macro2",
  "quote",
+ "rustc_version 0.3.3",
  "syn",
 ]
 
@@ -556,9 +557,9 @@ dependencies = [
 
 [[package]]
 name = "float-cmp"
-version = "0.8.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1267f4ac4f343772758f7b1bdcbe767c218bbab93bb432acbf5162bbf85a6c4"
+checksum = "98de4bbd547a563b716d8dfa9aad1cb19bfab00f4fa09a6a4ed21dbcf44ce9c4"
 dependencies = [
  "num-traits",
 ]
@@ -688,15 +689,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "itertools"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itertools"
 version = "0.10.1"
@@ -723,9 +715,9 @@ dependencies = [
 
 [[package]]
 name = "kstring"
-version = "1.0.1"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1167388385b43067bd74f967def6c93b969284f14f41e2ab6035b715d9343215"
+checksum = "0ef2db2b29cec96f7ec359ba84737662ebf6caca89e3401b3fc574b4a814e7fa"
 dependencies = [
  "serde",
 ]
@@ -751,9 +743,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.97"
+version = "0.2.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12b8adadd720df158f4d70dfe7ccc6adb0472d7c55ca83445f6a5ab3e36f8fb6"
+checksum = "320cfe77175da3a483efed4bc0adc1968ca050b098ce4f2f1c13a56626128790"
 
 [[package]]
 name = "log"
@@ -772,9 +764,9 @@ checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
 
 [[package]]
 name = "memchr"
-version = "2.4.0"
+version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
+checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
 
 [[package]]
 name = "memoffset"
@@ -801,7 +793,7 @@ version = "0.4.0"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.10.1",
+ "itertools",
  "regex",
  "structopt",
  "unicase",
@@ -818,9 +810,9 @@ dependencies = [
 
 [[package]]
 name = "nom"
-version = "6.1.2"
+version = "6.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
+checksum = "9c5c51b9083a3c620fa67a2a635d1ce7d95b897e957d6b28ff9a5da960a103a6"
 dependencies = [
  "bitvec",
  "funty",
@@ -856,12 +848,9 @@ dependencies = [
 
 [[package]]
 name = "object"
-version = "0.25.3"
+version = "0.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a38f2be3697a57b4060074ff41b44c16870d916ad7877c17696e063257482bc7"
-dependencies = [
- "memchr",
-]
+checksum = "1a5b3dd1c072ee7963717671d1ca129f1048fda25edea6b752bfc71ac8854170"
 
 [[package]]
 name = "once_cell"
@@ -966,9 +955,9 @@ dependencies = [
 
 [[package]]
 name = "plotters-backend"
-version = "0.3.1"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd8be10f7485c8a323ea100b20d6052c27cf5968f08f8e3a56ee9f0cf38ebd3d"
+checksum = "d88417318da0eaf0fdcdb51a0ee6c3bed624333bff8f946733049380be67ac1c"
 
 [[package]]
 name = "plotters-svg"
@@ -987,12 +976,13 @@ checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
 [[package]]
 name = "predicates"
-version = "1.0.8"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f49cfaf7fdaa3bfacc6fa3e7054e65148878354a5cfddcf661df4c851f8021df"
+checksum = "bc3d91237f5de3bcd9d927e24d03b495adb6135097b001cea7403e2d573d00a9"
 dependencies = [
- "difference",
+ "difflib",
  "float-cmp",
+ "itertools",
  "normalize-line-endings",
  "predicates-core",
  "regex",
@@ -1046,9 +1036,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.27"
+version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+checksum = "5c7ed8b8c7b886ea3ed7dde405212185f423ab44682667c8c6dd14aa1d9f6612"
 dependencies = [
  "unicode-xid",
 ]
@@ -1150,9 +1140,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.5.4"
+version = "1.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+checksum = "2a26af418b574bd56588335b3a3659a65725d4e636eb1016c2f9e3b38c7cc759"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1192,7 +1182,16 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
 dependencies = [
- "semver",
+ "semver 0.11.0",
+]
+
+[[package]]
+name = "rustc_version"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
+dependencies = [
+ "semver 1.0.3",
 ]
 
 [[package]]
@@ -1225,6 +1224,12 @@ dependencies = [
  "semver-parser",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f3aac57ee7f3272d8395c6e4f502f434f0e289fcd62876f70daa008c20dcabe"
+
 [[package]]
 name = "semver-parser"
 version = "0.10.2"
@@ -1266,9 +1271,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.64"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "799e97dc9fdae36a5c8b8f2cae9ce2ee9fdce2058c57a93e6099d919fd982f79"
+checksum = "336b10da19a12ad094b59d870ebde26a45402e5b470add4b5fd03c5048a32127"
 dependencies = [
  "itoa",
  "ryu",
@@ -1283,9 +1288,9 @@ checksum = "c970da16e7c682fa90a261cf0724dee241c9f7831635ecc4e988ae8f3b505559"
 
 [[package]]
 name = "siphasher"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cbce6d4507c7e4a3962091436e56e95290cb71fa302d0d270e32130b75fbff27"
+checksum = "729a25c17d72b06c68cb47955d44fda88ad2d3e7d77e025663fdd69b93dd71a1"
 
 [[package]]
 name = "static_assertions"
@@ -1307,9 +1312,9 @@ checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
 
 [[package]]
 name = "structopt"
-version = "0.3.21"
+version = "0.3.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5277acd7ee46e63e5168a80734c9f6ee81b1367a7d8772a2d765df2a3705d28c"
+checksum = "69b041cdcb67226aca307e6e7be44c8806423d83e018bd662360a93dabce4d71"
 dependencies = [
  "clap",
  "lazy_static",
@@ -1318,9 +1323,9 @@ dependencies = [
 
 [[package]]
 name = "structopt-derive"
-version = "0.4.14"
+version = "0.4.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ba9cdfda491b814720b6b06e0cac513d922fc407582032e8706e9f137976f90"
+checksum = "7813934aecf5f51a54775e00068c237de98489463968231a51746bbbc03f9c10"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -1331,9 +1336,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "1873d832550d4588c3dbc20f01361ab00bfe741048f71e3fecf145a7cc18b29c"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1380,18 +1385,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.25"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa6f76457f59514c7eeb4e59d891395fab0b2fd1d40723ae737d64153392e9c6"
+checksum = "93119e4feac1cbe6c798c34d3a53ea0026b0b1de6a120deef895137c0529bfe2"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.25"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a36768c0fbf1bb15eca10defa29526bda730a2376c2ab4393ccfa16fb1a318d"
+checksum = "060d69a0afe7796bf42e9e2ff91f5ee691fb15c53d38b4b62a9a53eb23164745"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1444,7 +1449,7 @@ version = "0.7.0"
 dependencies = [
  "anyhow",
  "bstr",
- "itertools 0.10.1",
+ "itertools",
  "log",
  "nom",
  "once_cell",
@@ -1476,7 +1481,7 @@ dependencies = [
  "env_logger 0.8.4",
  "human-panic",
  "ignore",
- "itertools 0.10.1",
+ "itertools",
  "kstring",
  "log",
  "maplit",
@@ -1514,7 +1519,7 @@ dependencies = [
  "codegenrs",
  "csv",
  "dictgen",
- "itertools 0.10.1",
+ "itertools",
  "structopt",
  "unicase",
 ]
@@ -1526,7 +1531,7 @@ dependencies = [
  "codegenrs",
  "csv",
  "edit-distance",
- "itertools 0.10.1",
+ "itertools",
  "structopt",
  "unicase",
  "varcon",
@@ -1551,7 +1556,7 @@ dependencies = [
  "codegenrs",
  "dictgen",
  "env_logger 0.7.1",
- "itertools 0.10.1",
+ "itertools",
  "log",
  "structopt",
  "typos",
@@ -1577,9 +1582,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-segmentation"
-version = "1.7.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb0d2e7be6ae3a5fa87eed5fb451aff96f2573d2694942e40543ae0bbe19c796"
+checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
 
 [[package]]
 name = "unicode-width"
@@ -1734,7 +1739,7 @@ version = "0.4.0"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.10.1",
+ "itertools",
  "structopt",
  "unicase",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 0f70035..694fffe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -89,7 +89,7 @@ typed-arena = "2.0.1"
 [dev-dependencies]
 assert_fs = "1.0"
 assert_cmd = "1.0"
-predicates = "1.0"
+predicates = "2.0"
 criterion = "0.3"
 maplit = "1.0"