📚 docs(package.json): Add more keywords.

Author: make-github-pseudonymous-again

package.json

@@ -57,17 +57,42 @@
   ],
   "homepage": "https://aureooms.github.io/js-integer",
   "keywords": [
+    "abitrary",
+    "addition",
     "algorithm",
     "arithmetic",
+    "big",
+    "big-int",
+    "big-integer",
+    "big-integers",
+    "big-num",
+    "big-number",
+    "big-numbers",
+    "bigint",
+    "biginteger",
+    "bigintegers",
     "bignum",
+    "bignumber",
+    "bignumbers",
+    "bn",
+    "bn.js",
     "complexity",
+    "division",
+    "exact",
+    "exponentiation",
+    "gcd",
     "integer",
     "javascript",
     "js",
+    "jsbn",
     "library",
     "logic",
     "mpa",
-    "multi-precision"
+    "multi-precision",
+    "multiplication",
+    "number",
+    "precision",
+    "subtraction"
   ],
   "license": "AGPL-3.0",
   "main": "lib/index.js",