diff --git a/src/main/scala/casing/Casing.scala b/src/main/scala/casing/Casing.scala
index 7d500e8..f44bf8b 100644
--- a/src/main/scala/casing/Casing.scala
+++ b/src/main/scala/casing/Casing.scala
@@ -2,24 +2,24 @@ package casing
 
 import scala.util.matching.Regex
 
-protected class Casing {
+class Casing {
   // finds a lower char followed by an upper char and returns them as capture groups
   // e.g. fooBar -> foo, Bar
-  private val LOWER_UPPER_REGEX: Regex = "([\\p{Ll}])(\\p{Lu})".r
+  private val LOWER_UPPER_REGEX: Regex = "(\\p{Ll})(\\p{Lu})".r
   // finds an upper char followed by and upper and lower char and return them as capture groups
   // e.g. FOOBar -> FOO, Bar
-  private val UPPER_UPPER_LOWER_REGEX: Regex = "(\\p{Lu})([\\p{Lu}][\\p{Ll}])".r
+  private val UPPER_UPPER_LOWER_REGEX: Regex = "(\\p{Lu})(\\p{Lu}\\p{Ll})".r
   // finds a number followed by a letter and returns them as capture groups
   private val NUMBER_LETTER_REGEX: Regex = "(\\d)(\\p{L})".r
   // finds a letter followed by a number and returns them as capture groups
   private val LETTER_NUMBER_REGEX: Regex = "(\\p{L})(\\d)".r
   // finds all non-alphanumeric characters (including non-ASCII)
   private val NON_ALPHANUMERIC_REGEXP: Regex = "[^\\p{L}\\d]+".r
-  // use a null character as a delimeter
-  private val DELIMETER = "\u0000"
+  // use a null character as a delimiter
+  private val DELIMITER = "\u0000"
   // a regex replacement value that will be used to replace the matched value with
-  // the first capture group followed by a delimeter and the second capture group
-  private val REPLACEMENT_SEPARATOR: String = s"$$1$DELIMETER$$2"
+  // the first capture group followed by a delimiter and the second capture group
+  private val REPLACEMENT_SEPARATOR: String = s"$$1$DELIMITER$$2"
 
   def caseSplit(input: String, options: SplitOptions = SplitOptions()): Seq[String] = {
     var result = input
@@ -32,9 +32,9 @@ protected class Casing {
         .replaceAll(LETTER_NUMBER_REGEX.pattern.pattern(), REPLACEMENT_SEPARATOR)
     }
 
-    result = result.replaceAll(NON_ALPHANUMERIC_REGEXP.pattern.pattern(), DELIMETER)
+    result = result.replaceAll(NON_ALPHANUMERIC_REGEXP.pattern.pattern(), DELIMITER)
 
-    result.split(DELIMETER).filter(_.nonEmpty)
+    result.split(DELIMITER).filter(_.nonEmpty)
   }
 
   // foo bar -> fooBar
diff --git a/src/main/scala/example/Example.scala b/src/main/scala/casing/Example.scala
similarity index 90%
rename from src/main/scala/example/Example.scala
rename to src/main/scala/casing/Example.scala
index 719001c..7a02d9d 100644
--- a/src/main/scala/example/Example.scala
+++ b/src/main/scala/casing/Example.scala
@@ -1,6 +1,6 @@
 import casing._
 
-object Example extends App {
+private object Example extends App {
   println(camelCase("foo_bar")) // fooBar
   println(pascalCase("foo bar")) // FooBar
   println(snakeCase("fooBar")) // foo_bar
diff --git a/src/test/scala/casing/CasingTest.scala b/src/test/scala/casing/CasingTest.scala
index 5793c2d..4e57094 100644
--- a/src/test/scala/casing/CasingTest.scala
+++ b/src/test/scala/casing/CasingTest.scala
@@ -1,6 +1,7 @@
+package casing
+
 import minitest._
-import casing.test.TestUtils.expect
-import casing._
+import casing.TestUtils.expect
 
 object CasingTest extends SimpleTestSuite {
   test("split") {
@@ -47,8 +48,8 @@ object CasingTest extends SimpleTestSuite {
 
   test("isCamelCase") {
     assert(isCamelCase("fooBar"))
-    assert(isCamelCase("FooBar") == false)
-    assert(isCamelCase("foo_bar") == false)
+    assert(!isCamelCase("FooBar"))
+    assert(!isCamelCase("foo_bar"))
   }
 
   test("PascalCase") {
@@ -58,8 +59,8 @@ object CasingTest extends SimpleTestSuite {
 
   test("isPascalCase") {
     assert(isPascalCase("FooBar"))
-    assert(isPascalCase("fooBar") == false)
-    assert(isPascalCase("foo_bar") == false)
+    assert(!isPascalCase("fooBar"))
+    assert(!isPascalCase("foo_bar"))
   }
 
   test("snake_case") {
@@ -74,8 +75,8 @@ object CasingTest extends SimpleTestSuite {
 
   test("isSnakeCase") {
     assert(isSnakeCase("foo_bar"))
-    assert(isSnakeCase("fooBar") == false)
-    assert(isSnakeCase("FOO_BAR") == false)
+    assert(!isSnakeCase("fooBar"))
+    assert(!isSnakeCase("FOO_BAR"))
   }
 
   test("CONSTANT_CASE") {
@@ -90,8 +91,8 @@ object CasingTest extends SimpleTestSuite {
 
   test("isConstantCase") {
     assert(isConstantCase("FOO_BAR"))
-    assert(isConstantCase("fooBar") == false)
-    assert(isConstantCase("foo_bar") == false)
+    assert(!isConstantCase("fooBar"))
+    assert(!isConstantCase("foo_bar"))
   }
 
   test("kebab-case") {
@@ -106,8 +107,8 @@ object CasingTest extends SimpleTestSuite {
 
   test("isKebabCase") {
     assert(isKebabCase("foo-bar"))
-    assert(isKebabCase("FOO-BAR") == false)
-    assert(isKebabCase("FOO_BAR") == false)
-    assert(isKebabCase("fooBar") == false)
+    assert(!isKebabCase("FOO-BAR"))
+    assert(!isKebabCase("FOO_BAR"))
+    assert(!isKebabCase("fooBar"))
   }
 }
diff --git a/src/test/scala/casing/utils.scala b/src/test/scala/casing/TestUtils.scala
similarity index 96%
rename from src/test/scala/casing/utils.scala
rename to src/test/scala/casing/TestUtils.scala
index b3df3be..82e3ea7 100644
--- a/src/test/scala/casing/utils.scala
+++ b/src/test/scala/casing/TestUtils.scala
@@ -1,4 +1,4 @@
-package casing.test
+package casing
 
 import minitest.api._