Fix BaseDimensions of rate-per-time quantities

Author: angularsen

Common/UnitDefinitions/BitRate.json

@@ -4,6 +4,7 @@
   "BaseType": "decimal",
   "XmlDoc": "In telecommunications and computing, bit rate is the number of bits that are conveyed or processed per unit of time.",
   "XmlDocRemarks": "https://en.wikipedia.org/wiki/Bit_rate",
+  "BaseDimensions": { "T": -1 },
   "Units": [
     {
       "SingularName": "BitPerSecond",

Common/UnitDefinitions/RatioChangeRate.json

@@ -2,6 +2,7 @@
   "Name": "RatioChangeRate",
   "BaseUnit": "DecimalFractionPerSecond",
   "XmlDoc": "The change in ratio per unit of time.",
+  "BaseDimensions": { "T": -1 },
   "Units": [
     {
       "SingularName": "PercentPerSecond",