Chocolatey: Upgrade packaging to 1.6.2.

Switch to a SHA256 sum and add an icon URL while we're here.

chocolatey/asciidoctorj.nuspec

@@ -5,7 +5,7 @@
     <!-- Read this before publishing packages to chocolatey.org: https://github.com/chocolatey/chocolatey/wiki/CreatePackages -->
     <id>asciidoctorj</id>
     <title>AsciidoctorJ (Install)</title>
-    <version>1.6.0</version>
+    <version>1.6.2</version>
     <!--
       https://github.com/asciidoctor/asciidoctorj/graphs/contributors
       https://github.com/asciidoctor/asciidoctor/graphs/contributors
@@ -25,12 +25,10 @@
     <mailingListUrl>http://discuss.asciidoctor.org/</mailingListUrl>
     <bugTrackerUrl>https://github.com/asciidoctor/asciidoctorj/issues</bugTrackerUrl>
     <tags>asciidoctor asciidoc docbook pdf</tags>
-    <copyright>2012-2018 Dan Allen, Ryan Waldron and the Asciidoctor Project</copyright>
+    <copyright>2012-2019 Dan Allen, Ryan Waldron and the Asciidoctor Project</copyright>
     <licenseUrl>https://raw.githubusercontent.com/asciidoctor/asciidoctorj/master/LICENSE.txt</licenseUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
-    <!-- https://github.com/asciidoctor/asciidoctor/issues/48
-    <iconUrl></iconUrl>
-    -->
+    <iconUrl>https://raw.githubusercontent.com/asciidoctor/brand/master/logo/logo-fill-color.svg?sanitize=true</iconUrl>
     <dependencies>
       <dependency id="jre8" />
     </dependencies>

chocolatey/tools/chocolateyinstall.ps1

@@ -4,7 +4,7 @@
 
 $ErrorActionPreference = 'Stop'; # stop on all errors
 
-$adocjVersion = '1.5.6'
+$adocjVersion = '1.6.2'
 $packageName= 'asciidoctorj' # arbitrary name for the package, used in messages
 $toolsDir   = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
 # Which is the preferred mirror? There are many listed at
@@ -18,8 +18,8 @@ $packageArgs = @{
   packageName   = $packageName
   unzipLocation = $toolsDir
   url           = $url
-  checksum      = 'f2ca8f525c8dea71acd0df6405cd143690b1db78'
-  checksumType  = 'sha1' #default is md5, can also be sha1
+  checksum      = 'b42f0efc4f61c57c5638b6e3aff746bb4df825c0d1824ad3065763e9aed2945c'
+  checksumType  = 'sha256' #default is md5, can also be sha1
   #checksum64    = ''
   #checksumType64= 'md5' #default is checksumType
 }