Update version to 0.8.21.8 (#76)

Author: joshkempner

src/build.props

@@ -22,8 +22,8 @@
         <Company>PerkinElmer,Linedata</Company>
         <Copyright>Copyright © 2014-2019 PerkinElmer Inc., Linedata Inc.</Copyright>
         <Description />
-        <AssemblyVersion>0.8.21.7</AssemblyVersion>
-        <FileVersion>0.8.21.7</FileVersion>
+        <AssemblyVersion>0.8.21.8</AssemblyVersion>
+        <FileVersion>0.8.21.8</FileVersion>
         <NeutralLanguage />
         <PackageLicenseUrl>https://opensource.org/licenses/MIT</PackageLicenseUrl>
         <DebugSymbols>true</DebugSymbols>
@@ -75,4 +75,4 @@
         </PropertyGroup>
       </When>
     </Choose>
-</Project>
+</Project>