diff --git a/TechTalk.JiraRestClient/FieldAttribute.cs b/TechTalk.JiraRestClient/FieldAttribute.cs
new file mode 100644
index 0000000..1935f1c
--- /dev/null
+++ b/TechTalk.JiraRestClient/FieldAttribute.cs
@@ -0,0 +1,14 @@
+using System;
+
+namespace TechTalk.JiraRestClient
+{
+    public class FieldAttribute : Attribute
+    {
+        public string FieldName { get; set; }
+
+        public FieldAttribute(string fieldName)
+        {
+            this.FieldName = fieldName;
+        }
+    }
+}
diff --git a/TechTalk.JiraRestClient/IJiraClient.cs b/TechTalk.JiraRestClient/IJiraClient.cs
index a023181..0dc895d 100644
--- a/TechTalk.JiraRestClient/IJiraClient.cs
+++ b/TechTalk.JiraRestClient/IJiraClient.cs
@@ -9,8 +9,11 @@ namespace TechTalk.JiraRestClient
         /// <summary>Returns all issues for the given project</summary>
         IEnumerable<Issue<TIssueFields>> GetIssues(String projectKey);
         /// <summary>Returns all issues of the specified type for the given project</summary>
-        IEnumerable<Issue<TIssueFields>> GetIssues(String projectKey, String issueType);
+        IEnumerable<Issue<TIssueFields>> GetIssues(String projectKey, String issueType);
         /// <summary>Returns all issues of the given type and the given project filtered by the given JQL query</summary>
+
+        IEnumerable<Issue<TIssueFields>> GetIssuesByQuery(string[] projects, string issueType, string jqlQuery);
+
         IEnumerable<Issue<TIssueFields>> GetIssuesByQuery(String projectKey, String issueType, String jqlQuery);
         /// <summary>Enumerates through all issues for the given project</summary>
         IEnumerable<Issue<TIssueFields>> EnumerateIssues(String projectKey);
diff --git a/TechTalk.JiraRestClient/JiraClient.cs b/TechTalk.JiraRestClient/JiraClient.cs
index b13346e..f3de56a 100644
--- a/TechTalk.JiraRestClient/JiraClient.cs
+++ b/TechTalk.JiraRestClient/JiraClient.cs
@@ -7,6 +7,8 @@
 using System.Text;
 using RestSharp;
 using RestSharp.Deserializers;
+using RestSharp.Extensions;
+using static System.String;
 
 namespace TechTalk.JiraRestClient
 {
@@ -29,8 +31,10 @@ public JiraClient(string baseUrl, string username, string password)
 
         private RestRequest CreateRequest(Method method, String path)
         {
-            var request = new RestRequest { Method = method, Resource = path, RequestFormat = DataFormat.Json };
-            request.AddHeader("Authorization", "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(String.Format("{0}:{1}", username, password))));
+            var request = new RestRequest { Method = method, Resource = path };
+            var encodedLogin = Encoding.ASCII.GetBytes($"{username}:{password}");
+            var base64String = Convert.ToBase64String(encodedLogin);
+            request.AddHeader("Authorization", $"Basic {base64String}");
             return request;
         }
 
@@ -64,6 +68,46 @@ public IEnumerable<Issue<TIssueFields>> GetIssuesByQuery(string projectKey, stri
             return EnumerateIssuesInternal(projectKey, issueType, jqlQuery);
         }
 
+        public IEnumerable<Issue<TIssueFields>> GetIssuesByQuery(string[] projectes, string issueType, string jqlQuery)
+        {
+            return EnumerateIssuesInternal(projectes, issueType, jqlQuery);
+        }
+
+        private IEnumerable<Issue<TIssueFields>> EnumerateIssuesInternal(string[] projectes, string issueType, string jqlQuery)
+        {
+            {
+                var queryCount = 50;
+                var resultCount = 0;
+                while (true)
+                {
+                    var projectsClause = string.Join("%2C+", projectes.Select(p => $"%22{Uri.EscapeUriString(p)}%22"));
+                    var jql = $"project+in+({projectsClause})";
+                    if (!IsNullOrEmpty(issueType))
+                        jql += $"+AND+issueType={Uri.EscapeUriString(issueType)}";
+                    if (!IsNullOrEmpty(jqlQuery))
+                        jql += $"+AND+{Uri.EscapeUriString(jqlQuery)}";
+                    var path = $"search?jql={jql}&startAt={resultCount}&maxResults={queryCount}";
+                    var request = CreateRequest(Method.GET, path);
+
+                    var response = ExecuteRequest(request);
+                    AssertStatus(response, HttpStatusCode.OK);
+
+                    var data = deserializer.Deserialize<IssueContainer<TIssueFields>>(response);
+                    var issues = data.issues?.ToArray() ?? Enumerable.Empty<Issue<TIssueFields>>().ToArray();
+
+                    foreach (var item in issues)
+                    {
+                        yield return item;
+                    }
+
+                    resultCount += issues.Length;
+
+                    if (resultCount < data.total) continue;
+                    else /* all issues received */ break;
+                }
+            }
+        }
+
         public IEnumerable<Issue<TIssueFields>> EnumerateIssues(String projectKey)
         {
             return EnumerateIssues(projectKey, null);
@@ -88,12 +132,12 @@ private IEnumerable<Issue<TIssueFields>> EnumerateIssuesInternal(String projectK
             var resultCount = 0;
             while (true)
             {
-                var jql = String.Format("project={0}", Uri.EscapeUriString(projectKey));
-                if (!String.IsNullOrEmpty(issueType))
-                    jql += String.Format("+AND+issueType={0}", Uri.EscapeUriString(issueType));
-                if (!String.IsNullOrEmpty(jqlQuery))
-                    jql += String.Format("+AND+{0}", Uri.EscapeUriString(jqlQuery));
-                var path = String.Format("search?jql={0}&startAt={1}&maxResults={2}", jql, resultCount, queryCount);
+                var jql = Format("project={0}", Uri.EscapeUriString(projectKey));
+                if (!IsNullOrEmpty(issueType))
+                    jql += Format("+AND+issueType={0}", Uri.EscapeUriString(issueType));
+                if (!IsNullOrEmpty(jqlQuery))
+                    jql += Format("+AND+{0}", Uri.EscapeUriString(jqlQuery));
+                var path = Format("search?jql={0}&startAt={1}&maxResults={2}", jql, resultCount, queryCount);
                 var request = CreateRequest(Method.GET, path);
 
                 var response = ExecuteRequest(request);
@@ -119,7 +163,7 @@ public Issue<TIssueFields> LoadIssue(String issueRef)
         {
             try
             {
-                var path = String.Format("issue/{0}", issueRef);
+                var path = Format("issue/{0}", issueRef);
                 var request = CreateRequest(Method.GET, path);
 
                 var response = ExecuteRequest(request);
@@ -163,11 +207,22 @@ public Issue<TIssueFields> CreateIssue(String projectKey, String issueType, TIss
                 if (issueFields.timetracking != null)
                     issueData.Add("timetracking", new { originalEstimate = issueFields.timetracking.originalEstimate });
 
-                var propertyList = typeof(TIssueFields).GetProperties().Where(p => p.Name.StartsWith("customfield_"));
-                foreach (var property in propertyList)
+                var propertyInfos = typeof(TIssueFields).GetProperties();
+                var propertiesFromAttribute = propertyInfos
+                    .Select(p => new { Property = p, FieldAttribute = p.GetAttribute<FieldAttribute>() })
+                    .Where(a => a.FieldAttribute != null)
+                    .Select(p => new NamedProperty(p.Property, p.FieldAttribute.FieldName));
+
+                var customFields = propertyInfos
+                    .Where(p => p.Name.StartsWith("customfield_"))
+                    .Select(p => new NamedProperty(p, p.Name));
+
+                var propertyList = customFields.Concat(propertiesFromAttribute);
+
+                foreach (var namedProperty in propertyList)
                 {
-                    var value = property.GetValue(issueFields, null);
-                    if (value != null) issueData.Add(property.Name, value);
+                    var value = namedProperty.Property.GetValue(issueFields, null);
+                    if (value != null) issueData.Add(namedProperty.FieldName, value);
                 }
 
                 request.AddBody(new { fields = issueData });
@@ -189,7 +244,7 @@ public Issue<TIssueFields> UpdateIssue(Issue<TIssueFields> issue)
         {
             try
             {
-                var path = String.Format("issue/{0}", issue.JiraIdentifier);
+                var path = Format("issue/{0}", issue.JiraIdentifier);
                 var request = CreateRequest(Method.PUT, path);
                 request.AddHeader("ContentType", "application/json");
 
@@ -228,7 +283,7 @@ public void DeleteIssue(IssueRef issue)
         {
             try
             {
-                var path = String.Format("issue/{0}?deleteSubtasks=true", issue.id);
+                var path = Format("issue/{0}?deleteSubtasks=true", issue.id);
                 var request = CreateRequest(Method.DELETE, path);
 
                 var response = ExecuteRequest(request);
@@ -246,7 +301,7 @@ public IEnumerable<Transition> GetTransitions(IssueRef issue)
         {
             try
             {
-                var path = String.Format("issue/{0}/transitions?expand=transitions.fields", issue.id);
+                var path = Format("issue/{0}/transitions?expand=transitions.fields", issue.id);
                 var request = CreateRequest(Method.GET, path);
 
                 var response = ExecuteRequest(request);
@@ -266,7 +321,7 @@ public Issue<TIssueFields> TransitionIssue(IssueRef issue, Transition transition
         {
             try
             {
-                var path = String.Format("issue/{0}/transitions", issue.id);
+                var path = Format("issue/{0}/transitions", issue.id);
                 var request = CreateRequest(Method.POST, path);
                 request.AddHeader("ContentType", "application/json");
 
@@ -294,7 +349,7 @@ public IEnumerable<JiraUser> GetWatchers(IssueRef issue)
         {
             try
             {
-                var path = String.Format("issue/{0}/watchers", issue.id);
+                var path = Format("issue/{0}/watchers", issue.id);
                 var request = CreateRequest(Method.GET, path);
 
                 var response = ExecuteRequest(request);
@@ -314,7 +369,7 @@ public IEnumerable<Comment> GetComments(IssueRef issue)
         {
             try
             {
-                var path = String.Format("issue/{0}/comment", issue.id);
+                var path = Format("issue/{0}/comment", issue.id);
                 var request = CreateRequest(Method.GET, path);
 
                 var response = ExecuteRequest(request);
@@ -334,7 +389,7 @@ public Comment CreateComment(IssueRef issue, String comment)
         {
             try
             {
-                var path = String.Format("issue/{0}/comment", issue.id);
+                var path = Format("issue/{0}/comment", issue.id);
                 var request = CreateRequest(Method.POST, path);
                 request.AddHeader("ContentType", "application/json");
                 request.AddBody(new Comment { body = comment });
@@ -355,7 +410,7 @@ public void DeleteComment(IssueRef issue, Comment comment)
         {
             try
             {
-                var path = String.Format("issue/{0}/comment/{1}", issue.id, comment.id);
+                var path = Format("issue/{0}/comment/{1}", issue.id, comment.id);
                 var request = CreateRequest(Method.DELETE, path);
 
                 var response = ExecuteRequest(request);
@@ -378,7 +433,7 @@ public Attachment CreateAttachment(IssueRef issue, Stream fileStream, String fil
         {
             try
             {
-                var path = String.Format("issue/{0}/attachments", issue.id);
+                var path = Format("issue/{0}/attachments", issue.id);
                 var request = CreateRequest(Method.POST, path);
                 request.AddHeader("X-Atlassian-Token", "nocheck");
                 request.AddHeader("ContentType", "multipart/form-data");
@@ -400,7 +455,7 @@ public void DeleteAttachment(Attachment attachment)
         {
             try
             {
-                var path = String.Format("attachment/{0}", attachment.id);
+                var path = Format("attachment/{0}", attachment.id);
                 var request = CreateRequest(Method.DELETE, path);
 
                 var response = ExecuteRequest(request);
@@ -470,7 +525,7 @@ public void DeleteIssueLink(IssueLink link)
         {
             try
             {
-                var path = String.Format("issueLink/{0}", link.id);
+                var path = Format("issueLink/{0}", link.id);
                 var request = CreateRequest(Method.DELETE, path);
 
                 var response = ExecuteRequest(request);
@@ -488,7 +543,7 @@ public IEnumerable<RemoteLink> GetRemoteLinks(IssueRef issue)
         {
             try
             {
-                var path = string.Format("issue/{0}/remotelink", issue.id);
+                var path = Format("issue/{0}/remotelink", issue.id);
                 var request = CreateRequest(Method.GET, path);
                 request.AddHeader("ContentType", "application/json");
 
@@ -509,7 +564,7 @@ public RemoteLink CreateRemoteLink(IssueRef issue, RemoteLink remoteLink)
         {
             try
             {
-                var path = string.Format("issue/{0}/remotelink", issue.id);
+                var path = Format("issue/{0}/remotelink", issue.id);
                 var request = CreateRequest(Method.POST, path);
                 request.AddHeader("ContentType", "application/json");
                 request.AddBody(new
@@ -545,7 +600,7 @@ public RemoteLink UpdateRemoteLink(IssueRef issue, RemoteLink remoteLink)
         {
             try
             {
-                var path = string.Format("issue/{0}/remotelink/{1}", issue.id, remoteLink.id);
+                var path = Format("issue/{0}/remotelink/{1}", issue.id, remoteLink.id);
                 var request = CreateRequest(Method.PUT, path);
                 request.AddHeader("ContentType", "application/json");
 
@@ -571,7 +626,7 @@ public void DeleteRemoteLink(IssueRef issue, RemoteLink remoteLink)
         {
             try
             {
-                var path = string.Format("issue/{0}/remotelink/{1}", issue.id, remoteLink.id);
+                var path = Format("issue/{0}/remotelink/{1}", issue.id, remoteLink.id);
                 var request = CreateRequest(Method.DELETE, path);
                 request.AddHeader("ContentType", "application/json");
 
diff --git a/TechTalk.JiraRestClient/NamedProperty.cs b/TechTalk.JiraRestClient/NamedProperty.cs
new file mode 100644
index 0000000..dd65cdd
--- /dev/null
+++ b/TechTalk.JiraRestClient/NamedProperty.cs
@@ -0,0 +1,17 @@
+namespace TechTalk.JiraRestClient
+{
+    using System.Reflection;
+
+    internal class NamedProperty
+    {
+        public PropertyInfo Property { get; set; }
+
+        public string FieldName { get; set; }
+
+        public NamedProperty(PropertyInfo property, string fieldName)
+        {
+            this.Property = property;
+            this.FieldName = fieldName;
+        }
+    }
+}
\ No newline at end of file
diff --git a/TechTalk.JiraRestClient/TechTalk.JiraRestClient.csproj b/TechTalk.JiraRestClient/TechTalk.JiraRestClient.csproj
index cf1f1d6..783958c 100644
--- a/TechTalk.JiraRestClient/TechTalk.JiraRestClient.csproj
+++ b/TechTalk.JiraRestClient/TechTalk.JiraRestClient.csproj
@@ -41,7 +41,9 @@
     <Compile Include="Comment.cs" />
     <Compile Include="CommentsContainer.cs" />
     <Compile Include="Compatibility.cs" />
+    <Compile Include="FieldAttribute.cs" />
     <Compile Include="IssueType.cs" />
+    <Compile Include="NamedProperty.cs" />
     <Compile Include="ServerInfo.cs" />
     <Compile Include="WatchersContainer.cs" />
     <Compile Include="IJiraClient.cs" />
diff --git a/TechTalk.JiraRestClient/TechTalk.JiraRestClient_NoNuget.csproj b/TechTalk.JiraRestClient/TechTalk.JiraRestClient_NoNuget.csproj
new file mode 100644
index 0000000..03d3631
--- /dev/null
+++ b/TechTalk.JiraRestClient/TechTalk.JiraRestClient_NoNuget.csproj
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{210529FA-454E-4C32-A2C8-353ECBD4DA05}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>TechTalk.JiraRestClient</RootNamespace>
+    <AssemblyName>TechTalk.JiraRestClient</AssemblyName>
+    <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
+    <TargetFrameworkProfile>
+    </TargetFrameworkProfile>
+    <FileAlignment>512</FileAlignment>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+  </PropertyGroup>
+  <PropertyGroup>
+    <StartupObject />
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <Prefer32Bit>false</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Prefer32Bit>false</Prefer32Bit>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="RestSharp">
+      <HintPath>..\..\packages\RestSharp.104.1\lib\net4-client\RestSharp.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Attachment.cs" />
+    <Compile Include="Comment.cs" />
+    <Compile Include="CommentsContainer.cs" />
+    <Compile Include="Compatibility.cs" />
+    <Compile Include="FieldAttribute.cs" />
+    <Compile Include="IssueType.cs" />
+    <Compile Include="NamedProperty.cs" />
+    <Compile Include="ServerInfo.cs" />
+    <Compile Include="WatchersContainer.cs" />
+    <Compile Include="IJiraClient.cs" />
+    <Compile Include="Issue.cs" />
+    <Compile Include="IssueContainer.cs" />
+    <Compile Include="IssueFields.cs" />
+    <Compile Include="IssueLink.cs" />
+    <Compile Include="IssueRef.cs" />
+    <Compile Include="JiraClient.cs" />
+    <Compile Include="JiraClientException.cs" />
+    <Compile Include="JiraUser.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="RemoteLink.cs" />
+    <Compile Include="RemoteLinkResult.cs" />
+    <Compile Include="Status.cs" />
+    <Compile Include="Transition.cs" />
+    <Compile Include="Timetracking.cs" />
+    <Compile Include="TransitionsContainer.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config">
+      <SubType>Designer</SubType>
+    </None>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file
diff --git a/TechTalk.JiraRestClient/packages.config b/TechTalk.JiraRestClient/packages.config
index a64d06c..3ef434c 100644
--- a/TechTalk.JiraRestClient/packages.config
+++ b/TechTalk.JiraRestClient/packages.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="RestSharp" version="104.1" targetFramework="net40-Client" />
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="RestSharp" version="104.1" targetFramework="net40-client" requireReinstallation="true" />
 </packages>
\ No newline at end of file