added cspell and better source

cspell.json

@@ -13,6 +13,7 @@
     "**/nupkg/**/*.*"
   ],
   "words": [
+    "Aabb",
     "assemblyfilters",
     "automerge",
     "branchcoverage",
@@ -34,8 +35,10 @@
     "issuecomment",
     "justalemon",
     "lcov",
+    "Lerp",
     "lihop",
     "linecoverage",
+    "Mathf",
     "methodcoverage",
     "missingall",
     "msbuild",
@@ -67,4 +70,4 @@
     "Unparented",
     "Xunit"
   ]
-}
+}