diff --git a/X10D.Tests/src/Core/ConvertibleTests.cs b/X10D.Tests/src/Core/ConvertibleTests.cs
deleted file mode 100644
index cc11fc2..0000000
--- a/X10D.Tests/src/Core/ConvertibleTests.cs
+++ /dev/null
@@ -1,58 +0,0 @@
-namespace X10D.Tests.Core
-{
-    using System;
-    using Microsoft.VisualStudio.TestTools.UnitTesting;
-
-    /// <summary>
-    ///     Tests for <see cref="ConvertibleExtensions" />.
-    /// </summary>
-    [TestClass]
-    public class ConvertibleTests
-    {
-        /// <summary>
-        ///     Tests for <see cref="ConvertibleExtensions.To{T}" />.
-        /// </summary>
-        [TestMethod]
-        public void To()
-        {
-            Assert.AreEqual(2, "2".To<int>());
-            Assert.AreEqual("12.5", 12.50.To<string>());
-            Assert.IsTrue("True".To<bool>());
-        }
-
-        /// <summary>
-        ///     Tests for <see cref="ConvertibleExtensions.ToOrDefault{T}(System.IConvertible, System.IFormatProvider)" />.
-        /// </summary>
-        [TestMethod]
-        public void ToOrDefault()
-        {
-            Assert.AreEqual(2, "2".ToOrDefault<int>());
-            Assert.AreEqual("12.5", 12.50.ToOrDefault<string>());
-            Assert.IsTrue("True".ToOrDefault<bool>());
-            Assert.ThrowsException<FormatException>(() => "Foo".ToOrDefault<double>());
-            Assert.IsTrue("1.5".ToOrDefault(out float f));
-            Assert.AreEqual(1.5f, f);
-        }
-
-        /// <summary>
-        ///     Tests for <see cref="ConvertibleExtensions.ToOrNull{T}(System.IConvertible, System.IFormatProvider)" />.
-        /// </summary>
-        [TestMethod]
-        public void ToOrNull()
-        {
-            Assert.IsFalse("foo".ToOrNull(out ConvertibleTests t));
-            Assert.IsNull(t);
-        }
-
-        /// <summary>
-        ///     Tests for <see cref="ConvertibleExtensions.ToOrOther{T}(System.IConvertible, T, System.IFormatProvider)" />.
-        /// </summary>
-        [TestMethod]
-        public void ToOrOther()
-        {
-            Assert.AreEqual(2.0, "Foo".ToOrOther(2.0));
-            Assert.IsFalse("Foo".ToOrOther(out var d, 2.0));
-            Assert.AreEqual(2.0, d);
-        }
-    }
-}
diff --git a/X10D/src/ConvertibleExtensions.cs b/X10D/src/ConvertibleExtensions.cs
deleted file mode 100644
index bf2a3ce..0000000
--- a/X10D/src/ConvertibleExtensions.cs
+++ /dev/null
@@ -1,161 +0,0 @@
-namespace X10D
-{
-    using System;
-
-    /// <summary>
-    ///     Extension methods for <see cref="IConvertible" />.
-    /// </summary>
-    public static class ConvertibleExtensions
-    {
-        /// <summary>
-        ///     Converts the object to another type.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="provider">An object that supplies culture-specific formatting information.</param>
-        /// <returns>Returns the value converted to <see cref="T" />.</returns>
-        /// <exception cref="InvalidCastException">
-        ///     This conversion is not supported.
-        ///     -or-
-        ///     <paramref name="value" /> is <see langword="null" /> and <typeparamref name="T" /> is a value type.
-        /// </exception>
-        [CLSCompliant(false)]
-        public static T To<T>(this IConvertible value, IFormatProvider provider = null)
-        {
-            if (value is null)
-            {
-                return default;
-            }
-
-            return (T)Convert.ChangeType(value, typeof(T), provider);
-        }
-
-        /// <summary>
-        ///     Converts the object to another type, returning the default value on failure.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="provider">The format provider.</param>
-        /// <returns>Returns the value converted to <see cref="T" />.</returns>
-        /// <exception cref="InvalidCastException">This conversion is not supported.</exception>
-        [CLSCompliant(false)]
-        public static T ToOrDefault<T>(this IConvertible value, IFormatProvider provider = null)
-        {
-            return value is null ? default : To<T>(value, provider);
-        }
-
-        /// <summary>
-        ///     Converts the object to another type, returning the default value on failure.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="newObj">The parameter where the result should be sent.</param>
-        /// <param name="provider">An object that supplies culture-specific formatting information.</param>
-        /// <returns>Returns <see langword="true" /> on success, <see langword="true" /> on failure.</returns>
-        [CLSCompliant(false)]
-        public static bool ToOrDefault<T>(this IConvertible value, out T newObj, IFormatProvider provider = null)
-        {
-            if (value is null)
-            {
-                newObj = default;
-                return false;
-            }
-
-            try
-            {
-                newObj = To<T>(value, provider);
-                return true;
-            }
-            catch (InvalidCastException)
-            {
-                newObj = default;
-                return false;
-            }
-        }
-
-        /// <summary>
-        ///     Converts the object to another type, returning <see langword="null" /> on failure.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="provider">An object that supplies culture-specific formatting information.</param>
-        /// <returns>Returns a <see cref="T" /> or <see langword="null" />.</returns>
-        [CLSCompliant(false)]
-        public static T ToOrNull<T>(this IConvertible value, IFormatProvider provider = null)
-            where T : class
-        {
-            return value.ToOrNull(out T v, provider) ? v : null;
-        }
-
-        /// <summary>
-        ///     Converts the object to another type, returning <see langword="null" /> on failure.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="newObj">The parameter where the result should be sent.</param>
-        /// <param name="provider">An object that supplies culture-specific formatting information.</param>
-        /// <returns>Returns a <see cref="T" /> or <see langword="null" />.</returns>
-        [CLSCompliant(false)]
-        public static bool ToOrNull<T>(this IConvertible value, out T newObj, IFormatProvider provider = null)
-            where T : class
-        {
-            return ToOrOther(value, out newObj, null, provider);
-        }
-
-        /// <summary>
-        ///     Converts the object to another type, returning a different value on failure.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="other">The backup value.</param>
-        /// <param name="provider">An object that supplies culture-specific formatting information.</param>
-        /// <returns>Returns the value converted to <see cref="T" />.</returns>
-        [CLSCompliant(false)]
-        public static T ToOrOther<T>(this IConvertible value, T other, IFormatProvider provider = null)
-        {
-            if (value is null)
-            {
-                return other;
-            }
-
-            try
-            {
-                return To<T>(value, provider);
-            }
-            catch (Exception ex) when (ex is InvalidCastException || ex is FormatException)
-            {
-                return other;
-            }
-        }
-
-        /// <summary>
-        ///     Converts the object to another type, returning a different value on failure.
-        /// </summary>
-        /// <typeparam name="T">The type to convert to.</typeparam>
-        /// <param name="value">The object to convert.</param>
-        /// <param name="newObj">The parameter where the result should be sent.</param>
-        /// <param name="other">The backup value.</param>
-        /// <param name="provider">An object that supplies culture-specific formatting information.</param>
-        /// <returns>Returns <see langword="true" /> on success, <see langword="true" /> on failure.</returns>
-        [CLSCompliant(false)]
-        public static bool ToOrOther<T>(this IConvertible value, out T newObj, T other, IFormatProvider provider = null)
-        {
-            if (value is null)
-            {
-                newObj = other;
-                return false;
-            }
-
-            try
-            {
-                newObj = To<T>(value, provider);
-                return true;
-            }
-            catch (Exception ex) when (ex is InvalidCastException || ex is FormatException)
-            {
-                newObj = other;
-                return false;
-            }
-        }
-    }
-}