Merge pull request Azure#4272 from cormacpayne/change-log-update

[Release 4.2.0] Update change logs for release

Merge pull request Azure#4268 from markcowl/fixbootstrap

Updating online help and ShouldProcess for BootStrapper cmdlets

Merge pull request Azure#4089 from markcowl/rel410rc2

Fix CSP Subscriptions and update changelogs for late changes

Merge pull request Azure#4005 from markcowl/rel402

Add EnvironmentName parameter alias and update versions and changelog…

Merge pull request Azure#3953 from Azure/update-4.0.1

Update AzureRM versions for 4.0.1

Merge pull request Azure#3942 from Azure/sphibbs-patch-1

Update README.md

Merge pull request Azure#3938 from markcowl/stonull

Fix getting storage account from environment in disconnected scenario

Merge pull request Azure#3935 from Azure/prbreaking

Add breaking changes for Profile module

Merge pull request Azure#3909 from markcowl/net452ins

Updating installer to require .Net 4.5.2

Merge pull request Azure#3894 from v-Ajnava/SBFixes

ServiceBus: Upcoming Breaking change - Removed 'ResourceGroupName' from NamespaceAttributes.