💥Add CoefficientOfThermalExpansion units, change base unit (#1287)

Fixes #1259 

### Add units
PerKelvin
PerDegreeCelsius
PerDegreeFahrenheit
PpmPerKelvin
PpmPerDegreeCelsius
PpmPerDegreeFahrenheit

### 💥Change base unit
From `InverseKelvin` to `PerKelvin`.

### Obsolete units (renamed)
InverseKelvin
InverseDegreeCelsius
InverseDegreeFahrenheit

Author: tm-ren

Common/UnitDefinitions/CoefficientOfThermalExpansion.json

@@ -1,6 +1,6 @@
 {
   "Name": "CoefficientOfThermalExpansion",
-  "BaseUnit": "InverseKelvin",
+  "BaseUnit": "PerKelvin",
   "XmlDocSummary": "A unit that represents a fractional change in size in response to a change in temperature.",
   "BaseDimensions": {
     "Θ": -1
@@ -9,6 +9,7 @@
     {
       "SingularName": "InverseKelvin",
       "PluralName": "InverseKelvin",
+      "ObsoleteText": "Use PerKelvin instead.",
       "BaseUnits": {
         "Θ": "Kelvin"
       },
@@ -17,13 +18,14 @@
       "Localization": [
         {
           "Culture": "en-US",
-          "Abbreviations": [ "K⁻¹", "1/K" ]
+          "Abbreviations": [ "1/K" ]
         }
       ]
     },
     {
       "SingularName": "InverseDegreeCelsius",
       "PluralName": "InverseDegreeCelsius",
+      "ObsoleteText": "Use PerDegreeCelsius instead.",
       "BaseUnits": {
         "Θ": "DegreeCelsius"
       },
@@ -32,13 +34,14 @@
       "Localization": [
         {
           "Culture": "en-US",
-          "Abbreviations": [ "°C⁻¹", "1/°C" ]
+          "Abbreviations": [ "1/°C" ]
         }
       ]
     },
     {
       "SingularName": "InverseDegreeFahrenheit",
       "PluralName": "InverseDegreeFahrenheit",
+      "ObsoleteText": "Use PerDegreeFahrenheit instead.",
       "BaseUnits": {
         "Θ": "DegreeFahrenheit"
       },
@@ -47,7 +50,97 @@
       "Localization": [
         {
           "Culture": "en-US",
-          "Abbreviations": [ "°F⁻¹", "1/°F" ]
+          "Abbreviations": [ "1/°F" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PerKelvin",
+      "PluralName": "PerKelvin",
+      "BaseUnits": {
+        "Θ": "Kelvin"
+      },
+      "FromUnitToBaseFunc": "{x}",
+      "FromBaseToUnitFunc": "{x}",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "K⁻¹" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PerDegreeCelsius",
+      "PluralName": "PerDegreeCelsius",
+      "BaseUnits": {
+        "Θ": "DegreeCelsius"
+      },
+      "FromUnitToBaseFunc": "{x}",
+      "FromBaseToUnitFunc": "{x}",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "°C⁻¹" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PerDegreeFahrenheit",
+      "PluralName": "PerDegreeFahrenheit",
+      "BaseUnits": {
+        "Θ": "DegreeFahrenheit"
+      },
+      "FromUnitToBaseFunc": "{x} * 9 / 5",
+      "FromBaseToUnitFunc": "{x} * 5 / 9",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "°F⁻¹" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PpmPerKelvin",
+      "PluralName": "PpmPerKelvin",
+      "BaseUnits": {
+        "Θ": "Kelvin"
+      },
+      "FromUnitToBaseFunc": "{x} / 1e6",
+      "FromBaseToUnitFunc": "{x} * 1e6",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "ppm/K" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PpmPerDegreeCelsius",
+      "PluralName": "PpmPerDegreeCelsius",
+      "BaseUnits": {
+        "Θ": "DegreeCelsius"
+      },
+      "FromUnitToBaseFunc": "{x} / 1e6",
+      "FromBaseToUnitFunc": "{x} * 1e6",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "ppm/°C" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PpmPerDegreeFahrenheit",
+      "PluralName": "PpmPerDegreeFahrenheit",
+      "BaseUnits": {
+        "Θ": "DegreeFahrenheit"
+      },
+      "FromUnitToBaseFunc": "{x} * 9 / 5e6",
+      "FromBaseToUnitFunc": "{x} * 5e6 / 9",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "ppm/°F" ]
         }
       ]
     }

Common/UnitEnumValues.g.json

@@ -154,7 +154,13 @@
   "CoefficientOfThermalExpansion": {
     "InverseDegreeCelsius": 1,
     "InverseDegreeFahrenheit": 2,
-    "InverseKelvin": 3
+    "InverseKelvin": 3,
+    "PerDegreeCelsius": 9,
+    "PerDegreeFahrenheit": 11,
+    "PerKelvin": 13,
+    "PpmPerDegreeCelsius": 6,
+    "PpmPerDegreeFahrenheit": 4,
+    "PpmPerKelvin": 7
   },
   "Compressibility": {
     "InverseAtmosphere": 1,