Download Sitecore release notes to hash table

Get-SitecoreReleaseNotes

function Get-SitecoreReleaseNotes()
{
  $links = (invoke-webrequest https://dev.sitecore.net/Downloads/Sitecore_Experience_Platform.aspx).Links
  $versions = $links |? {$_.innerText -like 'Sitecore Experience Platform*' -and $_.InnerText -notlike '*and below*'}  # https://www.howtogeek.com/124736/stupid-geek-tricks-extract-links-off-any-webpage-using-powershell/
  $versionlinks = @{}    
  $versions |% { $versionLinks.Add($_.innerHtml, $_.href)}
  $releaseNotes = @{}  
  $versionLinks.Keys |%{  
    $releaseNotesUrl = "https://dev.sitecore.net" + ($versionLinks[$_]).Trim(".aspx") + "/Release%20Notes"       
    Write-Verbose $releaseNotesUrl     
    $releaseNotes.Add($_, ((Invoke-WebRequest -uri $releaseNotesUrl).Content -replace '<[^>]+>',''))    # https://stackoverflow.com/a/29930250/402949
    write-verbose $releaseNotes[$_]
  }
  $releaseNotes
}