version bump 1.2 (DataDog#358)

* bump version to 1.2, consolidate nuget package versions into a single file

* missed a project file

make IntegrationSettings.AnalyticsSampleRate not nullable and default…

… to 1.0 (DataDog#324)

allow users to set sampling priority (DataDog#284)

* add convenience method to convert known string values to bool

* bump C# language version to 7.3 and use Enum as generic type constraint

# Conflicts:
#	src/Datadog.Trace/Datadog.Trace.csproj

* add sampling priority tag constants

* fix xml doc comments

* add special handling for sampling priority tags

add miniutf to 3rd party license file (DataDog#296)

version bump to 0.8.1 (DataDog#292)

* replace 0.8.0 with 0.8.1

* move <Version> property back to nuget projects so we can keep different version numbers

* bump Datadog.Trace

disable automatic AspNet integration for now, users can add HttpModul…

…e manually (DataDog#281)

MSI installer: create directory for log file (DataDog#258)

* rename EnvironmentVariables.User to EnvironmentVariables.IIS

* remove unused folders

* create folder %ProgramData%\Datadog .NET Tracer\logs and allow access to Everyone

* add WixUtilExtension reference

* use PermissionEx instead of Permission (adds new permissions to inherited ones, instead of replacing)

* add write access to Everyone, instead of full access

* add comments

ADO.NET integration (DataDog#248)

* add sample app for Postgres client (Npgsql)

* disable inlining in profiler

* remove manual build dependencies between sample apps the native profiler

* replace SQL Server integration with generic ADO.NET integration

* use explicit types where possible instead of `object`

* add debug logs, but keep commented in repo until we add debug mode

* also look for "Host" in the connection string

* fix compiler error

* remove commented code

* uncomment INSERT and DELETE queries

* remove target signatures

bump version to 0.6.0 (DataDog#239)

bump version to 0.5.2 (DataDog#227)