Fix SOC errors being displayed as Lua errors

Text file parser: fixed a problem where parsing could fail if the file ended with a comment without an trailing newline

Game Configurations: fixed a crash when no default values for UDMF integer or  floating point fields are set

Game Configurations: UDMF integer and floating point fields can now have default values other than 0

OBJ Exporter: fixed a problem where the wrong textures were used on 3D floors when they have the "use upper/lower texture" flag set

GZDoom Game Configuration: fixed lightmap thing arguments for pulsing, flickering, and randomly flickering lights

Game configurations: renamed lightmap things from static to lightmap. Added pulsing, flickering, and random flickering lightmap things

Visual Mode: fixed a problem where floors/ceilings could not be changed in size if the user tried to change their texture offset in a non-UDMF map

Game Configurations: fixed a problem where the enum list of enum bits handlers was not set for UDMF fields

- Added unique sprite sprites for custom rows/circles of items
- Set default values for hoops and custom rows/circles of items

Visual Mode: changing brightness now affects sector brightness, holding Alt will change local brightness

Visual Mode: fixed a problem where sloped 3D floors with an alpha value of less than 128 were not shown at all instead of fully opaque. Fixes #954

Draw Curve Mode, Draw Ellipse Mode, Draw Rectangle Mode: added option to place things at the designated vertex positions instead of drawing geometry (#956)

Point Thing at Cursor: check for a thing's fixedrotation rather than its category's arrow setting (#957)

Visual Mode: when applying camera rotation and pitch to things a status message will now be displayed. Fixes #955

- All files in a PK3's Lua folder are now checked, instead of just LUA_ and .lua files
- Slightly improve radius/height handling
- Simplify wallsprite/flatsprite/spawnceiling settings

Fix building the mono version

See merge request !13

diff --git a/Source/Core/BuilderMono.csproj b/Source/Core/BuilderMono.csproj
index 980fed4b..2419a7b0 100644
--- a/Source/Core/BuilderMono.csproj
+++ b/Source/Core/BuilderMono.csproj
@@ -304,6 +304,8 @@
     <Compile Include="Rendering\Vector4.cs" />
     <Compile Include="Rendering\VertexBuffer.cs" />
     <Compile Include="Rendering\VisualSlopeHandle.cs" />
+    <Compile Include="SRB2\LuaMobjStructure.cs" />
+    <Compile Include="SRB2\LuaParser.cs" />
     <Compile Include="VisualModes\VisualSlope.cs" />
     <Compile Include="Windows\ILinedefEditForm.cs" />
     <Compile Include="Windows\ISectorEditForm.cs" />