Use float instead of int for semver version

This prepares us in the event that 2.1 is introduced so we don't have to take a breaking change to accomodate it.

I also remove the special constructor so that it versions better as more properties are added and it aligns more with the other option detail nested classes.

Author: AArnott

src/NerdBank.GitVersioning.Tests/VersionOracleTests.cs

@@ -204,7 +204,10 @@ public void CanSetSemVer2ForNuGetPackageVersionPublicRelease()
         VersionOptions workingCopyVersion = new VersionOptions
         {
             Version = SemanticVersion.Parse("7.8.9-foo.25"),
-            NuGetPackageVersion = new VersionOptions.NuGetPackageVersionOptions(2)
+            NuGetPackageVersion = new VersionOptions.NuGetPackageVersionOptions
+            {
+                SemVer = 2,
+            }
         };
         this.WriteVersionFile(workingCopyVersion);
         this.InitializeSourceControl();
@@ -219,7 +222,10 @@ public void CanSetSemVer2ForNuGetPackageVersionNonPublicRelease()
         VersionOptions workingCopyVersion = new VersionOptions
         {
             Version = SemanticVersion.Parse("7.8.9-foo.25"),
-            NuGetPackageVersion = new VersionOptions.NuGetPackageVersionOptions(2)
+            NuGetPackageVersion = new VersionOptions.NuGetPackageVersionOptions
+            {
+                SemVer = 2,
+            }
         };
         this.WriteVersionFile(workingCopyVersion);
         this.InitializeSourceControl();

src/NerdBank.GitVersioning/VersionOptions.cs

@@ -169,7 +169,7 @@ public class NuGetPackageVersionOptions : IEquatable<NuGetPackageVersionOptions>
             /// <summary>
             /// Default value for <see cref="SemVer"/>
             /// </summary>
-            private const int DefaultNuGetPackageVersion = 1;
+            private const float DefaultNuGetPackageVersion = 1.0f;
 
             /// <summary>
             /// The default (uninitialized) instance.
@@ -179,25 +179,16 @@ public class NuGetPackageVersionOptions : IEquatable<NuGetPackageVersionOptions>
             /// <summary>
             /// Initializes a new instance of the <see cref="NuGetPackageVersionOptions" /> class.
             /// </summary>
-            public NuGetPackageVersionOptions() : this(DefaultNuGetPackageVersion)
+            public NuGetPackageVersionOptions()
             {
             }
 
-            /// <summary>
-            /// Initializes a new instance of the <see cref="NuGetPackageVersionOptions"/> class
-            /// </summary>
-            /// <param name="semVer">Semantic Version Level</param>
-            public NuGetPackageVersionOptions(int semVer)
-            {
-                this.SemVer = semVer;
-            }
-
             /// <summary>
             /// Gets or sets the version of SemVer (e.g. 1 or 2) that should be used when generating the package version.
             /// </summary>
             [JsonProperty(DefaultValueHandling = DefaultValueHandling.Ignore)]
             [DefaultValue(DefaultNuGetPackageVersion)]
-            public int SemVer { get; set; }
+            public float SemVer { get; set; } = DefaultNuGetPackageVersion;
 
             /// <inheritdoc />
             public override bool Equals(object obj) => this.Equals(obj as NuGetPackageVersionOptions);