[Ignore] Update changelog for 1.8.4 release (#1505)

Author: rjmholt

CHANGELOG.md

@@ -1,5 +1,34 @@
 # vscode-powershell Release History
 
+## v1.8.4
+### Friday, August 31, 2018
+#### [vscode-powershell](https://github.com/powershell/vscode-powershell)
+
+- [vscode-PowerShell #1489](https://github.com/PowerShell/vscode-PowerShell/pulls/1489) -
+  Use asynchronous logic for help completions
+- [vscode-PowerShell #1477](https://github.com/PowerShell/vscode-PowerShell/pulls/1477) -
+  Add BitsTransfer & user switch to install latest user profile insiders edition with Install-VSCode.ps1 script  (Thanks @tabs-not-spaces!)
+- [vscode-PowerShell #1485](https://github.com/PowerShell/vscode-PowerShell/pulls/1485) -
+  Increase connection timeout
+
+#### [PowerShellEditorServices](https://github.com/powershell/PowerShellEditorServices)
+
+- [PowerShellEditorServices #728](https://github.com/PowerShell/PowerShellEditorServices/pulls/728) -
+  Fix formatter crash when script contains parse errors
+- [PowerShellEditorServices #730](https://github.com/PowerShell/PowerShellEditorServices/pulls/730) -
+  Fix crash where lines appended to end of script file causes out of bounds exception
+- [PowerShellEditorServices #732](https://github.com/PowerShell/PowerShellEditorServices/pulls/732) -
+  Fix CodeLens crash when a file cannot be opened, stop unnecessary file reads in CodeLens
+- [PowerShellEditorServices #729](https://github.com/PowerShell/PowerShellEditorServices/pulls/729) -
+  Fix a null dereference when an invalid cast exception has no inner exception
+- [PowerShellEditorServices #719](https://github.com/PowerShell/PowerShellEditorServices/pulls/719) -
+  Reduce allocations in the CodeLens providers (Thanks @mattpwhite!)
+- [PowerShellEditorServices #725](https://github.com/PowerShell/PowerShellEditorServices/pulls/725) -
+  Fix null dereference when debugging untitlted filesj
+- [PowerShellEditorServices #726](https://github.com/PowerShell/PowerShellEditorServices/pulls/726) -
+  Fix comment-based help snippet
+
+
 ## v1.8.3
 ### Wednesday, August 15, 2018
 
@@ -13,7 +42,7 @@
    Change resourceLangId to editorLangId so right-click works properly with unsaved files (Thanks @corbob!)
 -  [PowerShell/vscode-powershell #1467](https://github.com/PowerShell/vscode-powershell/pull/1467) -
    Remove region folding from non-region areas (Thanks @glennsarti!)
-   
+
  #### [PowerShellEditorServices](https://github.com/powershell/PowerShellEditorServices)
 
 - [PowerShell/PowerShellEditorServices #722](https://github.com/PowerShell/PowerShellEditorServices/pull/722) -