Preparation for 2018.12.1 point release (microsoft#3708)

* Preparation for 2018.12.1 point release
* Add info for failing PlatformService test on Windows CI agent
* Remove use of node.os package in favour of the 'arch' package to test is64bit

Prepare for release to production. (microsoft#3687)

2018.11.0 (microsoft#3507)

Update issue title

Bump the version number to final (microsoft#3262)

Make a 2018.9.1 release (microsoft#2951)

typo file -> filed (microsoft#2810)

Update changelog with last-minute fix (microsoft#2485)

2018.7.1 release (microsoft#2235)

* Bump version number

* Touch up news entries

* Update changelog

* 2018.7.1 release for new language server

Move service registrations from debug adapter host to extension host (m…

…icrosoft#2193)

Fixes microsoft#2191