PlanckEinstein and PlanckEinstein2 classes replaced with PlanckEinsteinGeneralized. Docs to follow.

Aly-Lee not yet removed.  Next step.

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>

dev/fluids/Air.json

@@ -183,13 +183,16 @@
           "c": [
             0.6666666666666666
           ], 
+          "d": [
+            1
+          ], 
           "n": [
             -0.197938904
           ], 
           "t": [
-            87.31279
+            -87.31279
           ], 
-          "type": "IdealGasHelmholtzPlanckEinstein2"
+          "type": "IdealGasHelmholtzPlanckEinsteinGeneralized"
         }
       ], 
       "alphar": [

dev/fluids/Fluorine.json

@@ -174,15 +174,18 @@
         }, 
         {
           "c": [
+            1
+          ], 
+          "d": [
             -1
           ], 
           "n": [
             1.012767
           ], 
           "t": [
-            8.9057501
+            -8.9057501
           ], 
-          "type": "IdealGasHelmholtzPlanckEinstein2"
+          "type": "IdealGasHelmholtzPlanckEinsteinGeneralized"
         }, 
         {
           "a1": 0, 

dev/fluids/Oxygen.json

@@ -193,13 +193,16 @@
           "c": [
             0.6666666666666666
           ], 
+          "d": [
+            1
+          ], 
           "n": [
             0.944365
           ], 
           "t": [
-            74.91476960299131
+            -74.91476960299131
           ], 
-          "type": "IdealGasHelmholtzPlanckEinstein2"
+          "type": "IdealGasHelmholtzPlanckEinsteinGeneralized"
         }
       ], 
       "alphar": [

dev/fluids/n-Pentane.json

@@ -168,7 +168,7 @@
           "type": "IdealGasHelmholtzLogTau"
         }, 
         {
-          "T0": 309.213623675, 
+          "T0": 298, 
           "Tc": 469.7, 
           "c": [
             4, 
@@ -180,7 +180,7 @@
           "type": "IdealGasHelmholtzCP0AlyLee"
         }, 
         {
-          "T0": 309.213623675, 
+          "T0": 298, 
           "Tc": 469.7, 
           "c": [
             0,