diff --git a/Pipfile.lock b/Pipfile.lock
index 799b246..391e4e9 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -26,7 +26,8 @@
         },
         "agate-dbf": {
             "hashes": [
-                "sha256:00c93c498ec9a04cc587bf63dd7340e67e2541f0df4c9a7259d7cb3dd4ce372f"
+                "sha256:00c93c498ec9a04cc587bf63dd7340e67e2541f0df4c9a7259d7cb3dd4ce372f",
+                "sha256:f618fadb413d41468c90d72fca945681d82d9e4d1b3d89f9bda52e607b828c0b"
             ],
             "index": "pypi",
             "version": "==0.2.1"
@@ -55,10 +56,10 @@
         },
         "atomicwrites": {
             "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
+                "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197",
+                "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"
             ],
-            "version": "==1.3.0"
+            "version": "==1.4.0"
         },
         "attrs": {
             "hashes": [
@@ -78,10 +79,10 @@
         },
         "backcall": {
             "hashes": [
-                "sha256:38ecd85be2c1e78f77fd91700c76e14667dc21e2713b63876c0eb901196e01e4",
-                "sha256:bbbf4b1e5cd2bdb08f915895b51081c041bac22394fdfcfdfbe9f14b77c08bf2"
+                "sha256:5cbdbf27be5e7cfadb448baf0aa95508f91f2bbc6c6437cd9cd06e2a4c215e1e",
+                "sha256:fbbce6a29f263178a1f7915c1940bde0ec2b2a967566fe1c65c1dfb7422bd255"
             ],
-            "version": "==0.1.0"
+            "version": "==0.2.0"
         },
         "csvkit": {
             "hashes": [
@@ -108,10 +109,10 @@
         },
         "defusedxml": {
             "hashes": [
-                "sha256:6687150770438374ab581bb7a1b327a847dd9c5749e396102de3fad4e8a3ef93",
-                "sha256:f684034d135af4c6cbb949b8a4d2ed61634515257a67299e5f940fbaa34377f5"
+                "sha256:1bb3032db185915b62d7c6209c5a8792be6a32ab2fedacc84e01b52c51aa3e69",
+                "sha256:a352e7e428770286cc899e2542b6cdaedb2b4953ff269a210103ec58f6198a61"
             ],
-            "version": "==0.6.0"
+            "version": "==0.7.1"
         },
         "docopt": {
             "hashes": [
@@ -136,11 +137,11 @@
         },
         "importlib-metadata": {
             "hashes": [
-                "sha256:aa18d7378b00b40847790e7c27e11673d7fed219354109d0e7b9e5b25dc3ad26",
-                "sha256:d5f18a79777f3aa179c145737780282e27b508fc8fd688cb17c7a813e8bd39af"
+                "sha256:19192b88d959336bfa6bdaaaef99aeafec179eca19c47c804e555703ee5f07ef",
+                "sha256:2e881981c9748d7282b374b68e759c87745c25427b67ecf0cc67fb6637a1bff9"
             ],
             "markers": "python_version < '3.8'",
-            "version": "==0.23"
+            "version": "==4.0.0"
         },
         "invoke": {
             "hashes": [
@@ -214,15 +215,14 @@
         },
         "more-itertools": {
             "hashes": [
-                "sha256:409cd48d4db7052af495b09dec721011634af3753ae1ef92d2b32f73a745f832",
-                "sha256:92b8c4b06dac4f0611c0729b2f2ede52b2e1bac1ab48f089c7ddc12e26bb60c4"
+                "sha256:5652a9ac72209ed7df8d9c15daf4e1aa0e3d2ccd3c87f8265a0673cd9cbc9ced",
+                "sha256:c5d6da9ca3ff65220c3bfd2a8db06d698f05d4d2b9be57e1deb2be5a45019713"
             ],
-            "version": "==7.2.0"
+            "version": "==8.7.0"
         },
         "odfpy": {
             "hashes": [
-                "sha256:596021f0519623ca8717331951c95e3b8d7b21e86edc7efe8cb650a0d0f59a2b",
-                "sha256:863746b87121d9e4017c32b6c318f7229a588f189c122a9613116c55a47e276d"
+                "sha256:596021f0519623ca8717331951c95e3b8d7b21e86edc7efe8cb650a0d0f59a2b"
             ],
             "index": "pypi",
             "version": "==1.4.0"
@@ -236,10 +236,10 @@
         },
         "packaging": {
             "hashes": [
-                "sha256:28b924174df7a2fa32c1953825ff29c61e2f5e082343165438812f00d3a7fc47",
-                "sha256:d9551545c6d761f3def1677baf08ab2a3ca17c56879e70fecba2fc4dde4ed108"
+                "sha256:5b327ac1320dc863dca72f4514ecc086f31186744b84a230374cc1fd776feae5",
+                "sha256:67714da7f7bc052e064859c05c595155bd1ee9f69f76557e21f051443c20947a"
             ],
-            "version": "==19.2"
+            "version": "==20.9"
         },
         "parsedatetime": {
             "hashes": [
@@ -263,7 +263,6 @@
                 "sha256:9e2c1fd0e6ee3a49b28f95d4b33bc389c89b20af6a1255906e90ff1262ce62eb"
             ],
             "index": "pypi",
-            "markers": "sys_platform != 'win32'",
             "version": "==4.7.0"
         },
         "pickleshare": {
@@ -358,11 +357,11 @@
         },
         "py": {
             "hashes": [
-                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
-                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
+                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
+                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
             ],
             "index": "pypi",
-            "version": "==1.8.0"
+            "version": "==1.10.0"
         },
         "pygments": {
             "hashes": [
@@ -374,10 +373,10 @@
         },
         "pyparsing": {
             "hashes": [
-                "sha256:20f995ecd72f2a1f4bf6b072b63b22e2eb457836601e76d6e5dfcd75436acc1f",
-                "sha256:4ca62001be367f01bd3e92ecbb79070272a9d4964dce6a48a82ff0b8bc7e683a"
+                "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
+                "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
             ],
-            "version": "==2.4.5"
+            "version": "==2.4.7"
         },
         "pytest": {
             "hashes": [
@@ -457,6 +456,7 @@
                 "sha256:afa5541e9dea8ad0014251bc9d56171ca3d8b130c9627c6cb3681cff30be3f8a"
             ],
             "index": "pypi",
+            "markers": "python_version >= '3.0'",
             "version": "==1.3.11"
         },
         "tablib": {
@@ -482,6 +482,15 @@
             "index": "pypi",
             "version": "==4.3.3"
         },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918",
+                "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
+                "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==3.7.4.3"
+        },
         "unicodecsv": {
             "hashes": [
                 "sha256:018c08037d48649a0412063ff4eda26eaa81eff1546dbffa51fa5293276ff7fc"
@@ -523,10 +532,10 @@
         },
         "zipp": {
             "hashes": [
-                "sha256:3718b1cbcd963c7d4c5511a8240812904164b7f381b647143a89d3b98f9bcd8e",
-                "sha256:f06903e9f1f43b12d371004b4ac7b06ab39a44adc747266928ae6debfa7b3335"
+                "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76",
+                "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"
             ],
-            "version": "==0.6.0"
+            "version": "==3.4.1"
         }
     },
     "develop": {}