Bump version to 6.1 (hardkoded#1887)

Bump version to 6.0 (hardkoded#1874)

Bump version to 5.1 (hardkoded#1816)

Fix DefaultFirefoxRevision comment (hardkoded#1778)

Sign PuppeteerSharp.dll with private key (hardkoded#1693)

* Sign PuppeteerSharp.dll with private key

Fixes hardkoded#1691

* Remove public.snk, and use keypair.snk instead

* Make assembly version consistent with package version

* Raise version to 4.0.0

v3.0.0 (hardkoded#1653)

* v3.0.0

* Update libraries

* Fix signed test on net48

version 2.0.4 (hardkoded#1525)

v2.0.3 doc (hardkoded#1460)

v2.0.2 (hardkoded#1443)

Publish v2.0.1 (hardkoded#1374)