diff --git a/Pipfile b/Pipfile
index 49c5fd9..eb63e2d 100644
--- a/Pipfile
+++ b/Pipfile
@@ -17,7 +17,7 @@ wheel = "==0.35.1"
 [packages]
 arrow = "==0.16.*"
 click = "==7.1.2"
-lxml = "==4.5.2"
+lxml = "==4.6.1"
 
 [requires]
 python_version = "3"
diff --git a/Pipfile.lock b/Pipfile.lock
index 4d24bf1..511efb7 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "357832c009f77f092d7cc005ae0e27d5539227838573253d40a844714e61e9df"
+            "sha256": "473744030eb889fee398cd6a08f66cea7469d8ddb7dd0082e51dca0a87216548"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -34,47 +34,51 @@
         },
         "lxml": {
             "hashes": [
-                "sha256:05a444b207901a68a6526948c7cc8f9fe6d6f24c70781488e32fd74ff5996e3f",
-                "sha256:08fc93257dcfe9542c0a6883a25ba4971d78297f63d7a5a26ffa34861ca78730",
-                "sha256:107781b213cf7201ec3806555657ccda67b1fccc4261fb889ef7fc56976db81f",
-                "sha256:121b665b04083a1e85ff1f5243d4a93aa1aaba281bc12ea334d5a187278ceaf1",
-                "sha256:1fa21263c3aba2b76fd7c45713d4428dbcc7644d73dcf0650e9d344e433741b3",
-                "sha256:2b30aa2bcff8e958cd85d907d5109820b01ac511eae5b460803430a7404e34d7",
-                "sha256:4b4a111bcf4b9c948e020fd207f915c24a6de3f1adc7682a2d92660eb4e84f1a",
-                "sha256:5591c4164755778e29e69b86e425880f852464a21c7bb53c7ea453bbe2633bbe",
-                "sha256:59daa84aef650b11bccd18f99f64bfe44b9f14a08a28259959d33676554065a1",
-                "sha256:5a9c8d11aa2c8f8b6043d845927a51eb9102eb558e3f936df494e96393f5fd3e",
-                "sha256:5dd20538a60c4cc9a077d3b715bb42307239fcd25ef1ca7286775f95e9e9a46d",
-                "sha256:74f48ec98430e06c1fa8949b49ebdd8d27ceb9df8d3d1c92e1fdc2773f003f20",
-                "sha256:786aad2aa20de3dbff21aab86b2fb6a7be68064cbbc0219bde414d3a30aa47ae",
-                "sha256:7ad7906e098ccd30d8f7068030a0b16668ab8aa5cda6fcd5146d8d20cbaa71b5",
-                "sha256:80a38b188d20c0524fe8959c8ce770a8fdf0e617c6912d23fc97c68301bb9aba",
-                "sha256:8f0ec6b9b3832e0bd1d57af41f9238ea7709bbd7271f639024f2fc9d3bb01293",
-                "sha256:92282c83547a9add85ad658143c76a64a8d339028926d7dc1998ca029c88ea6a",
-                "sha256:94150231f1e90c9595ccc80d7d2006c61f90a5995db82bccbca7944fd457f0f6",
-                "sha256:9dc9006dcc47e00a8a6a029eb035c8f696ad38e40a27d073a003d7d1443f5d88",
-                "sha256:a76979f728dd845655026ab991df25d26379a1a8fc1e9e68e25c7eda43004bed",
-                "sha256:aa8eba3db3d8761db161003e2d0586608092e217151d7458206e243be5a43843",
-                "sha256:bea760a63ce9bba566c23f726d72b3c0250e2fa2569909e2d83cda1534c79443",
-                "sha256:c3f511a3c58676147c277eff0224c061dd5a6a8e1373572ac817ac6324f1b1e0",
-                "sha256:c9d317efde4bafbc1561509bfa8a23c5cab66c44d49ab5b63ff690f5159b2304",
-                "sha256:cc411ad324a4486b142c41d9b2b6a722c534096963688d879ea6fa8a35028258",
-                "sha256:cdc13a1682b2a6241080745b1953719e7fe0850b40a5c71ca574f090a1391df6",
-                "sha256:cfd7c5dd3c35c19cec59c63df9571c67c6d6e5c92e0fe63517920e97f61106d1",
-                "sha256:e1cacf4796b20865789083252186ce9dc6cc59eca0c2e79cca332bdff24ac481",
-                "sha256:e70d4e467e243455492f5de463b72151cc400710ac03a0678206a5f27e79ddef",
-                "sha256:ecc930ae559ea8a43377e8b60ca6f8d61ac532fc57efb915d899de4a67928efd",
-                "sha256:f161af26f596131b63b236372e4ce40f3167c1b5b5d459b29d2514bd8c9dc9ee"
+                "sha256:0e89f5d422988c65e6936e4ec0fe54d6f73f3128c80eb7ecc3b87f595523607b",
+                "sha256:189ad47203e846a7a4951c17694d845b6ade7917c47c64b29b86526eefc3adf5",
+                "sha256:1d87936cb5801c557f3e981c9c193861264c01209cb3ad0964a16310ca1b3301",
+                "sha256:211b3bcf5da70c2d4b84d09232534ad1d78320762e2c59dedc73bf01cb1fc45b",
+                "sha256:2358809cc64394617f2719147a58ae26dac9e21bae772b45cfb80baa26bfca5d",
+                "sha256:23c83112b4dada0b75789d73f949dbb4e8f29a0a3511647024a398ebd023347b",
+                "sha256:24e811118aab6abe3ce23ff0d7d38932329c513f9cef849d3ee88b0f848f2aa9",
+                "sha256:2d5896ddf5389560257bbe89317ca7bcb4e54a02b53a3e572e1ce4226512b51b",
+                "sha256:2d6571c48328be4304aee031d2d5046cbc8aed5740c654575613c5a4f5a11311",
+                "sha256:2e311a10f3e85250910a615fe194839a04a0f6bc4e8e5bb5cac221344e3a7891",
+                "sha256:302160eb6e9764168e01d8c9ec6becddeb87776e81d3fcb0d97954dd51d48e0a",
+                "sha256:3a7a380bfecc551cfd67d6e8ad9faa91289173bdf12e9cfafbd2bdec0d7b1ec1",
+                "sha256:3d9b2b72eb0dbbdb0e276403873ecfae870599c83ba22cadff2db58541e72856",
+                "sha256:475325e037fdf068e0c2140b818518cf6bc4aa72435c407a798b2db9f8e90810",
+                "sha256:4b7572145054330c8e324a72d808c8c8fbe12be33368db28c39a255ad5f7fb51",
+                "sha256:4fff34721b628cce9eb4538cf9a73d02e0f3da4f35a515773cce6f5fe413b360",
+                "sha256:56eff8c6fb7bc4bcca395fdff494c52712b7a57486e4fbde34c31bb9da4c6cc4",
+                "sha256:573b2f5496c7e9f4985de70b9bbb4719ffd293d5565513e04ac20e42e6e5583f",
+                "sha256:7ecaef52fd9b9535ae5f01a1dd2651f6608e4ec9dc136fc4dfe7ebe3c3ddb230",
+                "sha256:803a80d72d1f693aa448566be46ffd70882d1ad8fc689a2e22afe63035eb998a",
+                "sha256:8862d1c2c020cb7a03b421a9a7b4fe046a208db30994fc8ff68c627a7915987f",
+                "sha256:9b06690224258db5cd39a84e993882a6874676f5de582da57f3df3a82ead9174",
+                "sha256:a71400b90b3599eb7bf241f947932e18a066907bf84617d80817998cee81e4bf",
+                "sha256:bb252f802f91f59767dcc559744e91efa9df532240a502befd874b54571417bd",
+                "sha256:be1ebf9cc25ab5399501c9046a7dcdaa9e911802ed0e12b7d620cd4bbf0518b3",
+                "sha256:be7c65e34d1b50ab7093b90427cbc488260e4b3a38ef2435d65b62e9fa3d798a",
+                "sha256:c0dac835c1a22621ffa5e5f999d57359c790c52bbd1c687fe514ae6924f65ef5",
+                "sha256:c152b2e93b639d1f36ec5a8ca24cde4a8eefb2b6b83668fcd8e83a67badcb367",
+                "sha256:d182eada8ea0de61a45a526aa0ae4bcd222f9673424e65315c35820291ff299c",
+                "sha256:d18331ea905a41ae71596502bd4c9a2998902328bbabd29e3d0f5f8569fabad1",
+                "sha256:d20d32cbb31d731def4b1502294ca2ee99f9249b63bc80e03e67e8f8e126dea8",
+                "sha256:d4ad7fd3269281cb471ad6c7bafca372e69789540d16e3755dd717e9e5c9d82f",
+                "sha256:d6f8c23f65a4bfe4300b85f1f40f6c32569822d08901db3b6454ab785d9117cc",
+                "sha256:d84d741c6e35c9f3e7406cb7c4c2e08474c2a6441d59322a00dcae65aac6315d",
+                "sha256:e65c221b2115a91035b55a593b6eb94aa1206fa3ab374f47c6dc10d364583ff9",
+                "sha256:f98b6f256be6cec8dd308a8563976ddaff0bdc18b730720f6f4bee927ffe926f"
             ],
             "index": "pypi",
-            "version": "==4.5.2"
+            "version": "==4.6.1"
         },
         "python-dateutil": {
             "hashes": [
                 "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c",
                 "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.8.1"
         },
         "six": {
@@ -82,7 +86,6 @@
                 "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
                 "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.15.0"
         }
     },
@@ -106,31 +109,20 @@
                 "sha256:2f4078c2a41bf377eea06d71c9d2ba4eb8f6b1af2135bec27bbbb7d8f12bb703",
                 "sha256:bc58d83eb610252fd8de6363e39d4f1d0619c894b0ed24603b881c02e64c7386"
             ],
-            "markers": "python_version >= '3.5'",
             "version": "==2.4.2"
         },
-        "atomicwrites": {
-            "hashes": [
-                "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197",
-                "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"
-            ],
-            "markers": "sys_platform == 'win32'",
-            "version": "==1.4.0"
-        },
         "attrs": {
             "hashes": [
-                "sha256:0ef97238856430dcf9228e07f316aefc17e8939fc8507e18c6501b761ef1a42a",
-                "sha256:2867b7b9f8326499ab5b0e2d12801fa5c98842d2cbd22b35112ae04bf85b4dff"
+                "sha256:26b54ddbbb9ee1d34d5d3668dd37d6cf74990ab23c828c2888dccdceee395594",
+                "sha256:fce7fc47dfc976152e82d53ff92fa0407700c21acd20886a13777a0d20e655dc"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==20.1.0"
+            "version": "==20.2.0"
         },
         "babel": {
             "hashes": [
                 "sha256:1aac2ae2d0d8ea368fa90906567f5c08463d98ade155c0c4bfedd6a0f7160e38",
                 "sha256:d670ea0b10f8b723672d3a6abeb87b565b244da220d76b4dba1b66269ec152d4"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.8.0"
         },
         "black": {
@@ -163,60 +155,50 @@
             "index": "pypi",
             "version": "==7.1.2"
         },
-        "colorama": {
-            "hashes": [
-                "sha256:7d73d2a99753107a36ac6b455ee49046802e59d9d076ef8e47b61499fa29afff",
-                "sha256:e96da0d330793e2cb9485e9ddfd918d456036c7149416295932478192f4436a1"
-            ],
-            "markers": "sys_platform == 'win32' and sys_platform == 'win32' and sys_platform == 'win32'",
-            "version": "==0.4.3"
-        },
         "coverage": {
             "hashes": [
-                "sha256:098a703d913be6fbd146a8c50cc76513d726b022d170e5e98dc56d958fd592fb",
-                "sha256:16042dc7f8e632e0dcd5206a5095ebd18cb1d005f4c89694f7f8aafd96dd43a3",
-                "sha256:1adb6be0dcef0cf9434619d3b892772fdb48e793300f9d762e480e043bd8e716",
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-                "sha256:4186fc95c9febeab5681bc3248553d5ec8c2999b8424d4fc3a39c9cba5796962",
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-                "sha256:b8f58c7db64d8f27078cbf2a4391af6aa4e4767cc08b37555c4ae064b8558d9b",
-                "sha256:c1bbb628ed5192124889b51204de27c575b3ffc05a5a91307e7640eff1d48da4",
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-                "sha256:c96472b8ca5dc135fb0aa62f79b033f02aa434fb03a8b190600a5ae4102df1fd",
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-                "sha256:e26c993bd4b220429d4ec8c1468eca445a4064a61c74ca08da7429af9bc53bb0"
-            ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
-            "version": "==5.2.1"
+                "sha256:0203acd33d2298e19b57451ebb0bed0ab0c602e5cf5a818591b4918b1f97d516",
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+                "sha256:381ead10b9b9af5f64646cd27107fb27b614ee7040bb1226f9c07ba96625cbb5",
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+                "sha256:9342dd70a1e151684727c9c91ea003b2fb33523bf19385d4554f7897ca0141d4",
+                "sha256:9361de40701666b034c59ad9e317bae95c973b9ff92513dd0eced11c6adf2e21",
+                "sha256:9669179786254a2e7e57f0ecf224e978471491d660aaca833f845b72a2df3709",
+                "sha256:aac1ba0a253e17889550ddb1b60a2063f7474155465577caa2a3b131224cfd54",
+                "sha256:aef72eae10b5e3116bac6957de1df4d75909fc76d1499a53fb6387434b6bcd8d",
+                "sha256:bd3166bb3b111e76a4f8e2980fa1addf2920a4ca9b2b8ca36a3bc3dedc618270",
+                "sha256:c1b78fb9700fc961f53386ad2fd86d87091e06ede5d118b8a50dea285a071c24",
+                "sha256:c3888a051226e676e383de03bf49eb633cd39fc829516e5334e69b8d81aae751",
+                "sha256:c5f17ad25d2c1286436761b462e22b5020d83316f8e8fcb5deb2b3151f8f1d3a",
+                "sha256:c851b35fc078389bc16b915a0a7c1d5923e12e2c5aeec58c52f4aa8085ac8237",
+                "sha256:cb7df71de0af56000115eafd000b867d1261f786b5eebd88a0ca6360cccfaca7",
+                "sha256:cedb2f9e1f990918ea061f28a0f0077a07702e3819602d3507e2ff98c8d20636",
+                "sha256:e8caf961e1b1a945db76f1b5fa9c91498d15f545ac0ababbe575cfab185d3bd8"
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@@ -232,7 +214,6 @@
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@@ -240,38 +221,27 @@
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@@ -298,7 +268,6 @@
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@@ -337,7 +306,6 @@
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@@ -349,18 +317,16 @@
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@@ -375,7 +341,6 @@
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@@ -383,7 +348,6 @@
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@@ -391,7 +355,6 @@
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@@ -399,16 +362,14 @@
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@@ -423,7 +384,6 @@
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@@ -451,36 +411,41 @@
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@@ -488,7 +453,6 @@
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@@ -511,7 +475,6 @@
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@@ -527,7 +489,6 @@
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                 "sha256:8ce678dbaf790dbdb3eba24056d5364fb45944f33553dd5869b7580cdbb83614",
+                "sha256:92c325624e304ebf0e025d1224b77dd4e6393f18aab8d829b5b7e04afe9b7a2c",
                 "sha256:aaee9905aee35ba5905cfb3c62f3e83b3bec7b39413f0a7f19be4e547ea01ebb",
+                "sha256:b52ccf7cfe4ce2a1064b18594381bccf4179c2ecf7f513134ec2f993dd4ab395",
                 "sha256:bcd3b13b56ea479b3650b82cabd6b5343a625b0ced5429e4ccad28a8973f301b",
                 "sha256:c9e348e02e4d2b4a8b2eedb48210430658df6951fa484e59de33ff773fbd4b41",
                 "sha256:d205b1b46085271b4e15f670058ce182bd1199e56b317bf2ec004b6a44f911f6",
                 "sha256:d43943ef777f9a1c42bf4e552ba23ac77a6351de620aa9acf64ad54933ad4d34",
                 "sha256:d5d33e9e7af3b34a40dc05f498939f0ebf187f07c385fd58d591c533ad8562fe",
+                "sha256:d648b8e3bf2fe648745c8ffcee3db3ff903d0817a01a12dd6a6ea7a8f4889072",
+                "sha256:f208eb7aff048f6bea9586e61af041ddf7f9ade7caed625742af423f6bae3298",
+                "sha256:fac11badff8313e23717f3dada86a15389d0708275bddf766cca67a84ead3e91",
                 "sha256:fc0fea399acb12edbf8a628ba8d2312f583bdbdb3335635db062fa98cf71fca4",
+                "sha256:fcf135e17cc74dbfbc05894ebca928ffeb23d9790b3167a674921db19082401f",
                 "sha256:fe460b922ec15dd205595c9b5b99e2f056fd98ae8f9f56b888e7a17dc2b757e7"
             ],
-            "markers": "python_version < '3.8' and implementation_name == 'cpython'",
             "version": "==1.4.1"
         },
         "urllib3": {
             "hashes": [
-                "sha256:91056c15fa70756691db97756772bb1eb9678fa585d9184f24534b100dc60f4a",
-                "sha256:e7983572181f5e1522d9c98453462384ee92a0be7fac5f1413a1e35c56cc0461"
+                "sha256:8d7eaa5a82a1cac232164990f04874c594c9453ec55eef02eab885aa02fc17a2",
+                "sha256:f5321fbe4bf3fefa0efd0bfe7fb14e90909eb62a48ccda331726b4319897dd5e"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
-            "version": "==1.25.10"
+            "version": "==1.25.11"
         },
         "wheel": {
             "hashes": [
@@ -609,14 +574,6 @@
                 "sha256:b62ffa81fb85f4332a4f609cab4ac40709470da05643a082ec1eb88e6d9b97d7"
             ],
             "version": "==1.12.1"
-        },
-        "zipp": {
-            "hashes": [
-                "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b",
-                "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"
-            ],
-            "markers": "python_version >= '3.6'",
-            "version": "==3.1.0"
         }
     }
 }