Think the code is mostly there. It is now mainly fixing commit counting and different test scenarios

Author: JakeGinnivan

GitVersionCore.Tests/VersionCalculation/Strategies/LastTagBaseVersionStrategyTests.cs

@@ -10,6 +10,8 @@ public class LastTagBaseVersionStrategyTests
         [Test]
         public void ShouldAllowVersionIncrement()
         {
+            // TODO Looks like our MockRepostory stuff doesn't work properly. commits are added to end of list, but Tip is first.
+            // Changing behaviour breaks a bunch of tests
             var context = new GitVersionContextBuilder()
                 .WithTaggedMaster()
                 .AddCommit()

GitVersionCore/VersionCalculation/MetaDataCalculator.cs

@@ -9,8 +9,8 @@ public SemanticVersionBuildMetaData Create(Commit baseVersionSource, GitVersionC
         {
             var qf = new CommitFilter
             {
-                Since = baseVersionSource,
-                Until = context.CurrentCommit,
+                Since = context.CurrentCommit,
+                Until = baseVersionSource,
                 SortBy = CommitSortStrategies.Topological | CommitSortStrategies.Time
             };