Update year on copyright header in source files

Why I couldn't wait a few weeks to do it only once for 2020 is beyond me... 🤷‍♂️

Author: augustoproiete

README.md

@@ -50,4 +50,4 @@ In order for the Excel-DNA enricher to work from an add-in that was packaged usi
 
 ---
 
-_Copyright © 2018 Caio Proiete & Contributors - Provided under the [Apache License, Version 2.0](http://apache.org/licenses/LICENSE-2.0.html)._
+_Copyright © 2018-2019 Caio Proiete & Contributors - Provided under the [Apache License, Version 2.0](http://apache.org/licenses/LICENSE-2.0.html)._

sample/SampleAddIn/AddIn.cs

@@ -1,4 +1,4 @@
-// Copyright 2018 Caio Proiete & Contributors
+// Copyright 2018-2019 Caio Proiete & Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

sample/SampleAddIn/Properties/AssemblyInfo.cs

@@ -15,7 +15,7 @@
 
 [assembly: AssemblyCompany("caioproiete.net")]
 [assembly: AssemblyProduct("Serilog.Enrichers.ExcelDna")]
-[assembly: AssemblyCopyright("Copyright © 2018 Caio Proiete & Contributors")]
+[assembly: AssemblyCopyright("Copyright © 2018-2019 Caio Proiete & Contributors")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 

src/Serilog.Enrichers.ExcelDna/Enrichers/ExcelDna/ExcelBitnessEnricher.cs

@@ -1,4 +1,4 @@
-// Copyright 2018 Caio Proiete & Contributors
+// Copyright 2018-2019 Caio Proiete & Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/Serilog.Enrichers.ExcelDna/Enrichers/ExcelDna/ExcelVersionEnricher.cs

@@ -1,4 +1,4 @@
-// Copyright 2018 Caio Proiete & Contributors
+// Copyright 2018-2019 Caio Proiete & Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/Serilog.Enrichers.ExcelDna/Enrichers/ExcelDna/ExcelVersionNameEnricher.cs

@@ -1,4 +1,4 @@
-// Copyright 2018 Caio Proiete & Contributors
+// Copyright 2018-2019 Caio Proiete & Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/Serilog.Enrichers.ExcelDna/Enrichers/ExcelDna/XllPathEnricher.cs

@@ -1,4 +1,4 @@
-// Copyright 2018 Caio Proiete & Contributors
+// Copyright 2018-2019 Caio Proiete & Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/Serilog.Enrichers.ExcelDna/ExcelDnaLoggerConfigurationExtensions.cs

@@ -1,4 +1,4 @@
-// Copyright 2018 Caio Proiete & Contributors
+// Copyright 2018-2019 Caio Proiete & Contributors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

src/Serilog.Enrichers.ExcelDna/Properties/AssemblyInfo.cs

@@ -15,7 +15,7 @@
 
 [assembly: AssemblyCompany("caioproiete.net")]
 [assembly: AssemblyProduct("Serilog.Enrichers.ExcelDna")]
-[assembly: AssemblyCopyright("Copyright © 2018 Caio Proiete & Contributors")]
+[assembly: AssemblyCopyright("Copyright © 2018-2019 Caio Proiete & Contributors")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 

src/Serilog.Enrichers.ExcelDna/Serilog.Enrichers.ExcelDna.nuspec

@@ -14,7 +14,7 @@
     <description>A Serilog Enricher with properties from Excel-DNA</description>
     <language>en-US</language>
     <tags>serilog enricher exceldna excel-dna xll xllpath</tags>
-    <copyright>Copyright (c) 2018 Caio Proiete &amp; Contributors - Provided under the Apache License, Version 2.0</copyright>
+    <copyright>Copyright (c) 2018-2019 Caio Proiete &amp; Contributors - Provided under the Apache License, Version 2.0</copyright>
     <dependencies>
       <group targetFramework=".NETFramework4.5">
         <dependency id="Serilog" version="2.5.0" exclude="Build,Analyzers" />