Bump language version

Author: hazzik

build-common/NHibernate.props

@@ -6,7 +6,7 @@
     <VersionPatch  Condition="'$(VersionPatch)'  == ''">0</VersionPatch>
     <!-- Clear VersionSuffix for making release and set it to dev for making development builds -->
     <VersionSuffix Condition="'$(VersionSuffix)' == ''"></VersionSuffix>
-    <LangVersion Condition="'$(MSBuildProjectExtension)' != '.vbproj'">12.0</LangVersion>
+    <LangVersion Condition="'$(MSBuildProjectExtension)' != '.vbproj'">14.0</LangVersion>
 
     <VersionPrefix Condition="'$(VersionPrefix)' == ''">$(NhVersion).$(VersionPatch)</VersionPrefix>
     <VersionSuffix Condition="'$(VersionSuffix)' != '' AND '$(BuildNumber)' != ''">$(VersionSuffix).$(BuildNumber)</VersionSuffix>