Allow window size and polynomial to be configured from javascript

[dordille]

Output from running rabin against README.md matches current functionality

$ node cli.js README.md --bits=6 --min=48 --max=192
{"length":68,"offset":0,"hash":"8cad28d1ae7ac0a33835e8ca30689b398afdb267734b1c44a9be31cd66c45c0c"}
{"length":150,"offset":68,"hash":"7381821ede8bff4de27b1636fe291fb203e60f021a474b3bf391e49260b77f95"}
{"length":55,"offset":218,"hash":"9fc523565c3a933d856d092a9571ff7d67f9bd6c51e3424b69b89eecb3d9c78d"}
{"length":158,"offset":273,"hash":"1f8f6bebef3230f255b9c258705d1c7c878caa161cc9c86c195dddc76c0a55ad"}
{"length":102,"offset":431,"hash":"3f5afae0e03f766c33bbc5122e90443e9cc9f722242b39ce7d770d05395a010e"}
{"length":68,"offset":533,"hash":"543fe21de47fda30ec8d2af91d0d504a3fa3e4c9c722f78f1c57723445328e6d"}
{"length":99,"offset":601,"hash":"b05cc35af1a8de0dcf210e9763282333affb4457b1c2b49ab3063a547d180ac7"}
{"length":79,"offset":700,"hash":"edafe8c25a92783a55043025379b873d603df9cb9a455f3af8dc27887f82fe1b"}
{"length":192,"offset":779,"hash":"0dd693b678eec43ae253660e0fb2c8ebc33fcec58862ac26bc2ee29a7a8b0ef6"}
{"length":136,"offset":971,"hash":"21c487886cf9341cf95f506a6a5273a335d0c38caf8bde6c20692cd5f0fc8b9a"}
{"length":192,"offset":1107,"hash":"92ee17305e9805a7d8111ccacab15ee4437332dcf269b062be78a64827dc0a5b"}
{"length":120,"offset":1299,"hash":"396effe4cdde82629254b5d219bf1ae6df7a394d8b079792c960962dc1a5be02"}
{"length":146,"offset":1419,"hash":"95383b1065270bf02fcfb724d061fcea868fec0894b8e302d4aa1c0075f7c078"}
{"length":148,"offset":1565,"hash":"f942b69bb5b61d9e1bdd12a2b90ad5629b8e325fd8fd72294af0769dfdd9a3a3"}
{"length":70,"offset":1713,"hash":"a9045bc35908cdb4663b1a4164dde3c7709156fe6cb8de2e0c21b29a345545c3"}
{"length":192,"offset":1783,"hash":"a03ba1a785f5781df74f1a2b6617096b3e078411a739096cd93b40db01c4e0bf"}
{"length":71,"offset":1975,"hash":"649615201a692f453e14f4769810ebfda6e5d2565861ba59b28d4740c7c4e5c0"}
{"length":50,"offset":2046,"hash":"6cb9322be32793903def977bf0835929ebe1b7ed29e6cc469e43535ac2c5951f"}
{"length":138,"offset":2096,"hash":"b11f842b3c60eac5b3b61037da7224c4229a9bff6350bae278ed5211b59cb7e1"}
{"length":192,"offset":2234,"hash":"172d08b31b81c1fa9a0f1b52b6f120488e35071b2aadd3e8051c65be8e834989"}
{"length":63,"offset":2426,"hash":"1c7cabe0d90fbc1ef47e09f85a8076d90044a28d7ca1d84b3e2966c93372ffb2"}
average 118

With additional window and polynomial configuration

$ node cli.js README.md --bits=6 --min=48 --max=192 --window=16 --polynomial="3DF305DFB2A805"
{"length":64,"offset":0,"hash":"2945cf96718d3fefc416d6e8a75a866976408d1be99dadb080369cce1ad18534"}
{"length":192,"offset":64,"hash":"9b237bc8e4930b06a6d5ac1b0147a7cfd1f9b72f38e4f3de3e9d8c96ec3073da"}
{"length":107,"offset":256,"hash":"c160c8416f5af86dbfb9acf1c7341de704950ad4c5e2d7bc132a3e87d0627fad"}
{"length":114,"offset":363,"hash":"0269ac0a23e12b4e70e1cb431cf535e1b5b372609c0445392831770cd804fbfd"}
{"length":99,"offset":477,"hash":"f474560b36b2f42ddd300ae8994fa75c052517abc2818181780737a418dd1e94"}
{"length":155,"offset":576,"hash":"cf260bb01905eaa004769096fad20883354fefac94e10107eb6a101233153df1"}
{"length":74,"offset":731,"hash":"7247d27e7e1a7dbe8931edc4f33e7961f00ad544a077b2371ced1f722615b1af"}
{"length":143,"offset":805,"hash":"48d29e00b26db0fd4daf13611608f773f378c4c1124d3947720f6225fd300d10"}
{"length":181,"offset":948,"hash":"2062456c0f9b2ac94450fbb9350fdc8cdae23d9eacb13f74dba879501c9309d4"}
{"length":90,"offset":1129,"hash":"56318847d3d9c6d9ba80f1bc3ef0403646edde07770c340c36f0c7f50c304e3f"}
{"length":61,"offset":1219,"hash":"f7556362be5a18c2186d9c85594ed6f5d913c1bec9af9050d44a7f1d60e428ff"}
{"length":50,"offset":1280,"hash":"c4ed459e66bdb6b99c853e80979891d5d86c7607bbc0158ad8aa90171cd0e32e"}
{"length":192,"offset":1330,"hash":"a300dcd3103831a642c36690a9d30afdf4289c029001c308c56686b7998d6264"}
{"length":49,"offset":1522,"hash":"d87d1e10ffc9a7c313f13b49564c22152cb55f81d0ae161c7cc3af19b994219d"}
{"length":72,"offset":1571,"hash":"eb1673fa75013412558c655745b92b182e67699dbbbb50fc84fe2a1194741c73"}
{"length":58,"offset":1643,"hash":"5913a0aa370f6ac58c1aa955a79e90d7163eb3e62dacd86a3ff30f45f9ff1678"}
{"length":84,"offset":1701,"hash":"2f58eb61498ed4d798d1193ecbe2a6c9390663be1b5aef7e63f3c3a39b66509a"}
{"length":111,"offset":1785,"hash":"769ee7712c48161eecb1f8e0efc7bf16e06ff7d769796e37f9fc2760bf633b4e"}
{"length":110,"offset":1896,"hash":"a03c5f4277ac72b35bd97297b867ce8492bc4eaae11dc781e923c6419ec84adb"}
{"length":112,"offset":2006,"hash":"c9975ead20262c78d8b21c8b0a2c799b0d9798feb80f5600e5e92c8c0717a493"}
{"length":79,"offset":2118,"hash":"e6f86ea8732384b09f5804d8735049637a4cdabc5a5ff826b488f17f0fd1301c"}
{"length":95,"offset":2197,"hash":"c1c982f8899a16531a7fee8c883f6e495e121ce60ea8b074b942cf97f37d3d05"}
{"length":62,"offset":2292,"hash":"fb3861ceab8ca5fab51212c260a4fb39988c1641f5eea204259b362b7685f819"}
{"length":96,"offset":2354,"hash":"8f44bd01ee58516b15a48cfe1b9d6258dd0ad16a4c84ee65f0e584ba06b43186"}
{"length":39,"offset":2450,"hash":"7aa4e1844e5206b013afdbf207e9272622567ea6bc438f4d76bb2ab6b64e242b"}```