Patch csproj versions through appveyor

Drop XML preamble in shared project file to make sure the first line is
the root "Project" declaration.
Add Sdk to base project declaration, provoking MSB4011, but fixing
version patching.

Author: Vogel612

RubberduckBaseProject.csproj

@@ -1,6 +1,5 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
-
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- We're specifying the Sdk here to make appveyor happy, but this generates warning MSB4011 -->
   <PropertyGroup>
     <OutputType>Library</OutputType>
     <Company>Rubberduck-VBA</Company>
@@ -17,13 +16,13 @@
     <UnifyOutputPath Condition=" '$(UnifyOutputPath)' == ''">false</UnifyOutputPath>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(AssemblyVersion)' == ''">
+  <PropertyGroup Condition=" '$(Version)' == ''">
+    <Version>2.2.0</Version>
     <!--
      This assembly version specification is considered nonstandard.
      As such builds that do not override the assembly version generate a warning.
      -->
-    <AssemblyVersion>2.2.*</AssemblyVersion>
-    <FileVersion Condition=" '$(FileVersion)' == '' ">2.2.*</FileVersion>
+    <AssemblyVersion Condition=" '$(AssemblyVersion)' == '' ">2.2.*</AssemblyVersion>
     <!-- Wildcards are not deterministic, ensure build passes when setting wildcard versions -->
     <Deterministic>False</Deterministic>
   </PropertyGroup>
@@ -61,4 +60,4 @@
   </Target>
   <Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
 
-</Project>
+</Project>

appveyor.yml

@@ -38,14 +38,14 @@ install:
   set PATH=C:\Program Files (x86)\MSBuild\15.0\Bin;%PATH%
 
 # patch version specifiers in the base project
-# also patch version specifier in Core that's fixed to deal with XAML generated code
 dotnet_csproj:
   patch: true
-  file: 'RubberduckBaseProject.csproj;*\Rubberduck.Core.csproj'
+  # patch version specifier in Core that's non-wildcard to deal with XAML generated code?
+  file: 'RubberduckBaseProject.csproj' # ;*\Rubberduck.Core.csproj'
   version: '{version}'
   assembly_version: '{version}'
-  file_version: '{version}'
-  informational_version: '{version}'
+  #file_version: '{version}'
+  #informational_version: '{version}'
 
 
 before_build: