Update toolVersion

Author: Sébastien Geiser

RegexDialog/RegexDialog.csproj

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\Costura.Fody.4.1.0\build\Costura.Fody.props" Condition="Exists('..\packages\Costura.Fody.4.1.0\build\Costura.Fody.props')" />
   <Import Project="..\packages\Microsoft.Net.Compilers.3.8.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.3.8.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="..\packages\Microsoft.CodeAnalysis.Analyzers.3.3.2\build\Microsoft.CodeAnalysis.Analyzers.props" Condition="Exists('..\packages\Microsoft.CodeAnalysis.Analyzers.3.3.2\build\Microsoft.CodeAnalysis.Analyzers.props')" />