Added RandomFirstLetter casing type (#40)

* Add RandomFirstLetter casing type

* Added TitleCaseFirst casing type. Resolves #37

---------

Co-authored-by: Evan Greavu <evan.greavu@aveva.com>

Author: evancg37

Diceware.cs

@@ -156,6 +156,20 @@ private static void ApplyWordCasing(string[] words, WordCasingType wordCasing, C
 						string first = words[scan][0].ToString().ToUpperInvariant();
 						words[scan] = $"{first}{words[scan].Substring(1)}";
 						break;
+					case WordCasingType.TitleCaseFirst:
+						if (scan == 0)
+						{
+							string titleFirst = words[scan][0].ToString().ToUpperInvariant();
+							words[scan] = $"{titleFirst}{words[scan].Substring(1)}";
+						}
+						break;
+					case WordCasingType.TitleCaseRandom:
+						if (random.CoinToss())
+						{
+							string firstLetter = words[scan][0].ToString().ToUpperInvariant();
+							words[scan] = $"{firstLetter}{words[scan].Substring(1)}";
+						}
+						break;
 					case WordCasingType.Random:
 						char[] randomized = (from c in words[scan].ToCharArray()
 											 select (random.CoinToss()

WordCasingType.cs

@@ -28,6 +28,10 @@ public enum WordCasingType
 		Uppercase,
 		[Description("Title Case")]
 		TitleCase,
+		[Description("Title Case First Word")]
+		TitleCaseFirst,
+		[Description("Title Case Random")]
+		TitleCaseRandom,
 		Random,
 		[Description("Random Whole Words")]
 		WholeWord,