fixed nullable issue

fixed deploy key

FileContextCore/.gitignore

@@ -0,0 +1 @@
+FileContextCoreCert.pfx

FileContextCore/FileContextCore.csproj

@@ -3,23 +3,23 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <SignAssembly Condition="'$(OS)' == 'Windows_NT'">true</SignAssembly>
-    <AssemblyOriginatorKeyFile>key.snk</AssemblyOriginatorKeyFile>
+    <AssemblyOriginatorKeyFile>FileContextCoreCert.pfx</AssemblyOriginatorKeyFile>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <Version>3.0.0</Version>
+    <Version>3.0.1</Version>
     <Company>morrisjdev</Company>
     <Authors>morrisjdev</Authors>
     <Description>File provider for Entity Framework Core (to be used for development purposes)</Description>
     <Copyright>Copyright © Morris Janatzek</Copyright>
     <Title>FileContextCore</Title>
-    <PackageLicenseUrl>https://raw.githubusercontent.com/morrisjdev/FileContextCore/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <PackageIconUrl>https://morrisj.net/img/morrisjdev_logo.png</PackageIconUrl>
     <RepositoryUrl>https://github.com/morrisjdev/FileContextCore</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <PackageTags>Entity Framework Core;entity-framework-core;EF;Data;O/RM;FileContext;FileDB;JSON;XML;CSV;ELSX;Excel</PackageTags>
     <PackageProjectUrl>https://github.com/morrisjdev/FileContextCore</PackageProjectUrl>
     <NeutralLanguage>en-US</NeutralLanguage>
     <DelaySign>false</DelaySign>
-    <AssemblyVersion>3.0.0.0</AssemblyVersion>
+    <AssemblyVersion>3.0.1.0</AssemblyVersion>
   </PropertyGroup>
 
   <ItemGroup>

FileContextCore/FileContextCore.csproj.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <_LastSelectedProfileId>C:\Users\morri\Documents\Projects\productive\FileContextCore\FileContextCore\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
+    <_LastSelectedProfileId>C:\Users\mjanatzek\Documents\Projects\private\FileContextCore\FileContextCore\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
   </PropertyGroup>
 </Project>

FileContextCore/Properties/PublishProfiles/FolderProfile.pubxml

@@ -7,9 +7,7 @@ https://go.microsoft.com/fwlink/?LinkID=208121.
     <PublishProtocol>FileSystem</PublishProtocol>
     <Configuration>Release</Configuration>
     <Platform>Any CPU</Platform>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <PublishDir>bin\Release\netcoreapp2.1\publish\</PublishDir>
-    <SelfContained>false</SelfContained>
-    <_IsPortable>true</_IsPortable>
   </PropertyGroup>
 </Project>

FileContextCore/Serializer/SerializerHelper.cs

@@ -13,16 +13,25 @@ static class SerializerHelper
     {
         public static object Deserialize(this string input, Type type)
         {
-	    type = Nullable.GetUnderlyingType(type) ?? type;
-
-            if (String.IsNullOrEmpty(input))
+	        type = Nullable.GetUnderlyingType(type) ?? type;
+
+            if (string.IsNullOrEmpty(input))
+            {
                 return type.GetDefaultValue();
+            }
 
             if (type == typeof(TimeSpan))
+            {
                 return TimeSpan.Parse(input, CultureInfo.InvariantCulture);
-            else if (type == typeof(Guid))
+
+            }
+
+            if (type == typeof(Guid))
+            {
                 return Guid.Parse(input);
-            else if (type.IsArray)
+            }
+
+            if (type.IsArray)
             {
                 Type arrType = type.GetElementType();
                 List<object> arr = new List<object>();
@@ -34,8 +43,9 @@ public static object Deserialize(this string input, Type type)
 
                 return arr.ToArray();
             }
-            else
-                return Convert.ChangeType(input, type, CultureInfo.InvariantCulture);
+
+
+            return Convert.ChangeType(input, type, CultureInfo.InvariantCulture);
         }
 
         public static string Serialize(this object input)