fix: increment version to 0.2.1 (#15)

Author: ahanoff

src/AEMO.MDFF/AEMO.MDFF.csproj

@@ -5,7 +5,7 @@
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-        <Version>0.2.0</Version>
+        <Version>0.2.1</Version>
         <Title>AEMO.MDFF</Title>
         <Authors>Akhan Zhakiyanov</Authors>
         <Description>Parser for Australian Energy Market Operator (AEMO) Meter Data File Format (MDFF) specification</Description>