Adding ?<Degrees> (Fixes #185)

RegEx/Degrees.regex.source.ps1

@@ -0,0 +1,20 @@
+$myName = ($MyInvocation.MyCommand.ScriptBlock.File | Split-Path -Leaf) -replace '\.source', '' -replace '\.ps1', '.txt'
+$myRoot = $MyInvocation.MyCommand.ScriptBlock.File | Split-Path
+
+New-RegEx -Description "Matching degrees" |
+    New-Regex -Pattern ?<Decimals> | 
+    New-RegEx -CharacterClass Whitespace -Min 0 -Comment "Optional Whitespace" |
+    New-RegEx -Atomic -Or @("Degrees","Degree", "°") -Comment "Degree(s) or the degree symbol" |
+    New-RegEx -CharacterClass Whitespace -Min 0 -Comment "Optional Whitespace" |
+    New-RegEx -Name UnitType -Optional -Pattern $(
+        New-RegEx -Atomic -Or @(
+            "Celsius"
+            "C"
+            "Fahrenheit"
+            "F"
+        )
+    ) -Comment "Optional unit" |
+    Set-Content -Path (Join-Path $myRoot $myName)
+
+
+

RegEx/Degrees.regex.txt

@@ -0,0 +1,27 @@
+# Matching degrees
+(?<Decimals>
+(?<IsNegative>\-)?                # It might be start with a -
+(?:(?>                            # Then it can be either: 
+    (?<Characteristic>\d+)        # One or more digits (the Characteristic)
+    (?:\.(?<Mantissa>\d+)){0,1}   # followed by a period and one or more digits (the Mantissa)
+    |                             # Or it can be
+    (?:\.(?<Mantissa>\d+))        # just a Mantissa      
+))
+(?:
+    E
+    (?<Exponent>
+        [+-]\d+
+    )
+)?
+)
+\s{0,}                            # Optional Whitespace
+(?>
+  Degrees  |
+  Degree  |
+  °)                              # Degree(s) or the degree symbol
+(?<UnitType>(?>
+  Celius  |
+  C  |
+  Fahrenheit  |
+  F))?                            # Optional unit
+