* 追踪grpc服务调用

* update

* 1.fix bug:调用grpc服务，当grpcContext.Host为null时会导致peer为null，从而未能形成一条完整链路，故为grpcContext.Host设置一个默认值
2.代码优化

* chore: update to .net core 3.1

* chore: update ci environment

* chore: fix dependence

* 追踪grpc服务调用

* update

* Add general host

* Add sign

* Add implicit convert

* Add xml comment

* Fix process crash when has unhandled exception.

* Improve performance: Use struct

* Add benchmark

* benchmark

* fix build error

* Add xml comment

* fix: LocalSegment relationship error when use Task.WhenAll

* Add general host

* Add sign

* Add implicit convert

* Add clr metrics report

* mark smartsql as manual plug-in

* Update CpuHelpers

* Add general host

* Add sign

1. fix SmartSqlTracingDiagnosticProcessor Span.AddTag null value bug
2. refactor SmartSqlTracingDiagnosticProcessor

* update SmartSql-version -> v4.0.0

* add SkyApm.Sample.SmartSql.csproj
add SmartSql.CommandExecuter Diagnostics

* fix CreateExitSegment.GetParentSegmentContext(SpanType.Exit) bug

* update SmartSql-version -> v4.0.0

* add SkyApm.Sample.SmartSql.csproj
add SmartSql.CommandExecuter Diagnostics

* add SkyApm.Diagnostics.SmartSql project

* add SmartSqlTracingDiagnosticProcessor

* add SkyApm.Diagnostics.SmartSql : DbSession - Open & BeginTransaction & CommitTransaction & Rollback & Dispose & Invoke

* 1. u SmartSql-version
2. add SmartSqlController Test

* 1. update PackageReference to PrivateAssets="All".
2. add description information to SkyApm.Diagnostics.SmartSql.csproj

use ServiceInstanceId here

* Use atomic operations to determine if the size of the queue exceeds the limit.

* Optimizing reflection performance

* Update version to 0.9.0

* Upgrade bootstrap to version 3.4.1. In Bootstrap 4 before 4.3.1 and Bootstrap 3 before 3.4.1, XSS is possible in the tooltip or popover data-template attribute. For more information, see: https://blog.getbootstrap.com/2019/02/13/bootstrap-4-3-1-and-3-4-1/

* rm InstallCommand

* Update docs

* Update Readme and docs

* rename skywalking-netcore to skyapm-dotnet

* rename namespace

* rename project name

* rm

* update protocol submodule

* Update CI

* change file header

* update sample

* add config

* Add sample config file

* Update docs

* Delete `ISkyWalkingClient` interface

* Use segment protocol V2

* Forget the old api. All context apis will be overwritten.

* Add segments define

* Add some apis

* Add carrierParser

* Add SegmentContextAccessor API

* Add SampledDelegate interface

* Add thread-safe  SamplerChainBuilder

* Add SegmentContextFactory

* Add ITracingContext Interface

* Refactoring the core API for tracing context

* remove utils package

* Resolve issue #57 : Provide percentage-based sampling

* Refactor HttpClient Tracing

* Fix header carrier

* Add async exitSpan sample

* Add Task.WhenAll sample

* Refactor EntityFrameworkCore tracing

* Refactor SqlClient & CAP Tracing

* Refactor Asp.Net tracing

* Remove outdated APIs

* Rename PackagePrefix from `SkyWalking` to `SkyAPM`

* Delete MySql.Data

* Rename Agent package name

* Rename PackagePrefix from `SkyWalking` to `SkyAPM`

* Delete MySql.Data

cc @liuhaoyang

* add ProtocolVersion config

* Add Protocol Version Selection Switch

* add v5 collect service

* update protocol

* rm azure-pipeline.yml

* move build.ps1 to scripts

* Fix $Script path

* Fix $Script path

* fix version.props path

* Add protocol submodule

* cleanup protocol define

* move build.cake to rootpath

* Add submodule init

* Remove protos submodule

* pre release Protocol

* Agent anomalies do not affect the application

* Update version to 0.7.1

* Add service register v6

* Add ping service

* Fix licenses

* Clean up unused code

* Refactor segment reporter

* Modified version number