diff --git a/Pipfile.lock b/Pipfile.lock
index 6b3079d..54a38e3 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -26,35 +26,35 @@
         },
         "lxml": {
             "hashes": [
-                "sha256:0537eee4902e8bf4f41bfee8133f7edf96533dd175930a12086d6a40d62376b2",
-                "sha256:0562ec748abd230ab87d73384e08fa784f9b9cee89e28696087d2d22c052cc27",
-                "sha256:09e91831e749fbf0f24608694e4573be0ef51430229450c39c83176cc2e2d353",
-                "sha256:1ae4c0722fc70c0d4fba43ae33c2885f705e96dce1db41f75ae14a2d2749b428",
-                "sha256:1c630c083d782cbaf1f7f37f6cac87bda9cff643cf2803a5f180f30d97955cef",
-                "sha256:2fe74e3836bd8c0fa7467ffae05545233c7f37de1eb765cacfda15ad20c6574a",
-                "sha256:37af783c2667ead34a811037bda56a0b142ac8438f7ed29ae93f82ddb812fbd6",
-                "sha256:3f2d9eafbb0b24a33f56acd16f39fc935756524dcb3172892721c54713964c70",
-                "sha256:47d8365a8ef14097aa4c65730689be51851b4ade677285a3b2daa03b37893e26",
-                "sha256:510e904079bc56ea784677348e151e1156040dbfb736f1d8ea4b9e6d0ab2d9f4",
-                "sha256:58d0851da422bba31c7f652a7e9335313cf94a641aa6d73b8f3c67602f75b593",
-                "sha256:7940d5c2185ffb989203dacbb28e6ae88b4f1bb25d04e17f94b0edd82232bcbd",
-                "sha256:7cf39bb3a905579836f7a8f3a45320d9eb22f16ab0c1e112efb940ced4d057a5",
-                "sha256:9563a23c1456c0ab550c087833bc13fcc61013a66c6420921d5b70550ea312bf",
-                "sha256:95b392952935947e0786a90b75cc33388549dcb19af716b525dae65b186138fc",
-                "sha256:983129f3fd3cef5c3cf067adcca56e30a169656c00fcc6c648629dbb850b27fa",
-                "sha256:a0b75b1f1854771844c647c464533def3e0a899dd094a85d1d4ed72ecaaee93d",
-                "sha256:b5db89cc0ef624f3a81214b7961a99f443b8c91e88188376b6b322fd10d5b118",
-                "sha256:c0a7751ba1a4bfbe7831920d98cee3ce748007eab8dfda74593d44079568219a",
-                "sha256:c0c5a7d4aafcc30c9b6d8613a362567e32e5f5b708dc41bc3a81dac56f8af8bb",
-                "sha256:d4d63d85eacc6cb37b459b16061e1f100d154bee89dc8d8f9a6128a5a538e92e",
-                "sha256:da5e7e941d6e71c9c9a717c93725cda0708c2474f532e3680ac5e39ec57d224d",
-                "sha256:dccad2b3c583f036f43f80ac99ee212c2fa9a45151358d55f13004d095e683b2",
-                "sha256:df46307d39f2aeaafa1d25309b8a8d11738b73e9861f72d4d0a092528f498baa",
-                "sha256:e70b5e1cb48828ddd2818f99b1662cb9226dc6f57d07fc75485405c77da17436",
-                "sha256:ea825562b8cd057cbc9810d496b8b5dec37a1e2fc7b27bc7c1e72ce94462a09a"
+                "sha256:0358b9e9642bc7d39aac5cffe9884a99a5ca68e5e2c1b89e570ed60da9139908",
+                "sha256:091a359c4dafebbecd3959d9013f1b896b5371859165e4e50b01607a98d9e3e2",
+                "sha256:1998e4e60603c64bcc35af61b4331ab3af087457900d3980e18d190e17c3a697",
+                "sha256:2000b4088dee9a41f459fddaf6609bba48a435ce6374bb254c5ccdaa8928c5ba",
+                "sha256:2afb0064780d8aaf165875be5898c1866766e56175714fa5f9d055433e92d41d",
+                "sha256:2d8f1d9334a4e3ff176d096c14ded3100547d73440683567d85b8842a53180bb",
+                "sha256:2e38db22f6a3199fd63675e1b4bd795d676d906869047398f29f38ca55cb453a",
+                "sha256:3181f84649c1a1ca62b19ddf28436b1b2cb05ae6c7d2628f33872e713994c364",
+                "sha256:37462170dfd88af8431d04de6b236e6e9c06cda71e2ca26d88ef2332fd2a5237",
+                "sha256:3a9d8521c89bf6f2a929c3d12ad3ad7392c774c327ea809fd08a13be6b3bc05f",
+                "sha256:3d0bbd2e1a28b4429f24fd63a122a450ce9edb7a8063d070790092d7343a1aa4",
+                "sha256:483d60585ce3ee71929cea70949059f83850fa5e12deb9c094ed1c8c2ec73cbd",
+                "sha256:4888be27d5cba55ce94209baef5bcd7bbd7314a3d17021a5fc10000b3a5f737d",
+                "sha256:64b0d62e4209170a2a0c404c446ab83b941a0003e96604d2e4f4cb735f8a2254",
+                "sha256:68010900898fdf139ac08549c4dba8206c584070a960ffc530aebf0c6f2794ef",
+                "sha256:872ecb066de602a0099db98bd9e57f4cfc1d62f6093d94460c787737aa08f39e",
+                "sha256:88a32b03f2e4cd0e63f154cac76724709f40b3fc2f30139eb5d6f900521b44ed",
+                "sha256:b1dc7683da4e67ab2bebf266afa68098d681ae02ce570f0d1117312273d2b2ac",
+                "sha256:b29e27ce9371810250cb1528a771d047a9c7b0f79630dc7dc5815ff828f4273b",
+                "sha256:ce197559596370d985f1ce6b7051b52126849d8159040293bf8b98cb2b3e1f78",
+                "sha256:d45cf6daaf22584eff2175f48f82c4aa24d8e72a44913c5aff801819bb73d11f",
+                "sha256:e2ff9496322b2ce947ba4a7a5eb048158de9d6f3fe9efce29f1e8dd6878561e6",
+                "sha256:f7b979518ec1f294a41a707c007d54d0f3b3e1fd15d5b26b7e99b62b10d9a72e",
+                "sha256:f9c7268e9d16e34e50f8246c4f24cf7353764affd2bc971f0379514c246e3f6b",
+                "sha256:f9c839806089d79de588ee1dde2dae05dc1156d3355dfeb2b51fde84d9c960ad",
+                "sha256:ff962953e2389226adc4d355e34a98b0b800984399153c6678f2367b11b4d4b8"
             ],
             "index": "pypi",
-            "version": "==4.3.1"
+            "version": "==4.3.2"
         },
         "officedissector": {
             "editable": true,
@@ -129,17 +129,17 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:10cbf6e27dbce8c30807caf056c8eb50917e0eaafe86347671b57254006c3e69",
-                "sha256:ca4be454458f9dec299268d472aaa5a11f67a4ff70093396e1ceae9c76cf4bbb"
+                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
+                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
             ],
-            "version": "==18.2.0"
+            "version": "==19.1.0"
         },
         "certifi": {
             "hashes": [
-                "sha256:47f9c83ef4c0c621eaef743f133f09fa8a74a9b75f037e8624f83bd1b6626cb7",
-                "sha256:993f830721089fef441cdfeb4b2c8c9df86f0c63239f06bd025a76a7daddb033"
+                "sha256:59b7658e26ca9c7339e00f8f4636cdfe59d34fa37b9b04f6f9e9926b3cece1a5",
+                "sha256:b26104d6835d1f5e49452a26eb2ff87fe7090b89dfcaee5ea2212697e1e1d7ae"
             ],
-            "version": "==2018.11.29"
+            "version": "==2019.3.9"
         },
         "chardet": {
             "hashes": [
@@ -158,39 +158,39 @@
         },
         "coverage": {
             "hashes": [
-                "sha256:09e47c529ff77bf042ecfe858fb55c3e3eb97aac2c87f0349ab5a7efd6b3939f",
-                "sha256:0a1f9b0eb3aa15c990c328535655847b3420231af299386cfe5efc98f9c250fe",
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-                "sha256:10e8af18d1315de936d67775d3a814cc81d0747a1a0312d84e27ae5610e313b0",
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+                "sha256:839dc7c36501254e14331bcb98b27002aa415e4af7ea039d9009409b9d2d5420",
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+                "sha256:988529edadc49039d205e0aa6ce049c5ccda4acb2d6c3c5c550c17e8c02c05ba",
+                "sha256:998d7e73548fe395eeb294495a04d38942edb66d1fa61eb70418871bc621227e",
+                "sha256:9de60893fb447d1e797f6bf08fdf0dbcda0c1e34c1b06c92bd3a363c0ea8c609",
+                "sha256:9e80d45d0c7fcee54e22771db7f1b0b126fb4a6c0a2e5afa72f66827207ff2f2",
+                "sha256:a545a3dfe5082dc8e8c3eb7f8a2cf4f2870902ff1860bd99b6198cfd1f9d1f49",
+                "sha256:a5d8f29e5ec661143621a8f4de51adfb300d7a476224156a39a392254f70687b",
+                "sha256:aca06bfba4759bbdb09bf52ebb15ae20268ee1f6747417837926fae990ebc41d",
+                "sha256:bb23b7a6fd666e551a3094ab896a57809e010059540ad20acbeec03a154224ce",
+                "sha256:bfd1d0ae7e292105f29d7deaa9d8f2916ed8553ab9d5f39ec65bcf5deadff3f9",
+                "sha256:c62ca0a38958f541a73cf86acdab020c2091631c137bd359c4f5bddde7b75fd4",
+                "sha256:c709d8bda72cf4cd348ccec2a4881f2c5848fd72903c185f363d361b2737f773",
+                "sha256:c968a6aa7e0b56ecbd28531ddf439c2ec103610d3e2bf3b75b813304f8cb7723",
+                "sha256:df785d8cb80539d0b55fd47183264b7002077859028dfe3070cf6359bf8b2d9c",
+                "sha256:f406628ca51e0ae90ae76ea8398677a921b36f0bd71aab2099dfed08abd0322f",
+                "sha256:f46087bbd95ebae244a0eda01a618aff11ec7a069b15a3ef8f6b520db523dcf1",
+                "sha256:f8019c5279eb32360ca03e9fac40a12667715546eed5c5eb59eb381f2f501260",
+                "sha256:fc5f4d209733750afd2714e9109816a29500718b32dd9a5db01c0cb3a019b96a"
             ],
-            "version": "==4.5.2"
+            "version": "==4.5.3"
         },
         "filelock": {
             "hashes": [
@@ -208,33 +208,33 @@
         },
         "more-itertools": {
             "hashes": [
-                "sha256:38a936c0a6d98a38bcc2d03fdaaedaba9f412879461dd2ceff8d37564d6522e4",
-                "sha256:c0a5785b1109a6bd7fac76d6837fd1feca158e54e521ccd2ae8bfe393cc9d4fc",
-                "sha256:fe7a7cae1ccb57d33952113ff4fa1bc5f879963600ed74918f1236e212ee50b9"
+                "sha256:0125e8f60e9e031347105eb1682cef932f5e97d7b9a1a28d9bf00c22a5daef40",
+                "sha256:590044e3942351a1bdb1de960b739ff4ce277960f2425ad4509446dbace8d9d1"
             ],
-            "version": "==5.0.0"
+            "markers": "python_version > '2.7'",
+            "version": "==6.0.0"
         },
         "pluggy": {
             "hashes": [
-                "sha256:8ddc32f03971bfdf900a81961a48ccf2fb677cf7715108f85295c67405798616",
-                "sha256:980710797ff6a041e9a73a5787804f848996ecaa6f8a1b1e08224a5894f2074a"
+                "sha256:19ecf9ce9db2fce065a7a0586e07cfb4ac8614fe96edf628a264b1c70116cf8f",
+                "sha256:84d306a647cc805219916e62aab89caa97a33a1dd8c342e87a37f91073cd4746"
             ],
-            "version": "==0.8.1"
+            "version": "==0.9.0"
         },
         "py": {
             "hashes": [
-                "sha256:bf92637198836372b520efcba9e020c330123be8ce527e535d185ed4b6f45694",
-                "sha256:e76826342cefe3c3d5f7e8ee4316b80d1dd8a300781612ddbc765c17ba25a6c6"
+                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
+                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
             ],
-            "version": "==1.7.0"
+            "version": "==1.8.0"
         },
         "pytest": {
             "hashes": [
-                "sha256:65aeaa77ae87c7fc95de56285282546cfa9c886dc8e5dc78313db1c25e21bc07",
-                "sha256:6ac6d467d9f053e95aaacd79f831dbecfe730f419c6c7022cb316b365cd9199d"
+                "sha256:592eaa2c33fae68c7d75aacf042efc9f77b27c08a6224a4f59beab8d9a420523",
+                "sha256:ad3ad5c450284819ecde191a654c09b0ec72257a2c711b9633d677c71c9850c4"
             ],
             "index": "pypi",
-            "version": "==4.2.0"
+            "version": "==4.3.1"
         },
         "pytest-cov": {
             "hashes": [
@@ -254,20 +254,20 @@
         },
         "pyyaml": {
             "hashes": [
-                "sha256:3d7da3009c0f3e783b2c873687652d83b1bbfd5c88e9813fb7e5b03c0dd3108b",
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-                "sha256:aa7dd4a6a427aed7df6fb7f08a580d68d9b118d90310374716ae90b710280af1",
-                "sha256:bc558586e6045763782014934bfaf39d48b8ae85a2713117d16c39864085c613",
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-                "sha256:e170a9e6fcfd19021dd29845af83bb79236068bf5fd4df3327c1be18182b2531"
+                "sha256:1adecc22f88d38052fb787d959f003811ca858b799590a5eaa70e63dca50308c",
+                "sha256:436bc774ecf7c103814098159fbb84c2715d25980175292c648f2da143909f95",
+                "sha256:460a5a4248763f6f37ea225d19d5c205677d8d525f6a83357ca622ed541830c2",
+                "sha256:5a22a9c84653debfbf198d02fe592c176ea548cccce47553f35f466e15cf2fd4",
+                "sha256:7a5d3f26b89d688db27822343dfa25c599627bc92093e788956372285c6298ad",
+                "sha256:9372b04a02080752d9e6f990179a4ab840227c6e2ce15b95e1278456664cf2ba",
+                "sha256:a5dcbebee834eaddf3fa7366316b880ff4062e4bcc9787b78c7fbb4a26ff2dd1",
+                "sha256:aee5bab92a176e7cd034e57f46e9df9a9862a71f8f37cad167c6fc74c65f5b4e",
+                "sha256:c51f642898c0bacd335fc119da60baae0824f2cde95b0330b56c0553439f0673",
+                "sha256:c68ea4d3ba1705da1e0d85da6684ac657912679a649e8868bd850d2c299cce13",
+                "sha256:e23d0cc5299223dcc37885dae624f382297717e459ea24053709675a976a3e19"
             ],
             "index": "pypi",
-            "version": "==3.13"
+            "version": "==5.1"
         },
         "requests": {
             "hashes": [
@@ -307,10 +307,10 @@
         },
         "virtualenv": {
             "hashes": [
-                "sha256:8b9abfc51c38b70f61634bf265e5beacf6fae11fc25d355d1871f49b8e45f0db",
-                "sha256:cceab52aa7d4df1e1871a70236eb2b89fcfe29b6b43510d9738689787c513261"
+                "sha256:6aebaf4dd2568a0094225ebbca987859e369e3e5c22dc7d52e5406d504890417",
+                "sha256:984d7e607b0a5d1329425dd8845bd971b957424b5ba664729fab51ab8c11bc39"
             ],
-            "version": "==16.4.0"
+            "version": "==16.4.3"
         }
     }
 }