* Updated docs

* Added CustomHeaders property to CAP.AzureServiceBusOptions.cs

* Merged upstream/master

* Updated docs

* Verified if a custom header with the same key is already present

* Architectural refactoring

* Add new memory serializer

* code refactor

* Add service inject

* update to publish

* Fix message consumer bugs

* upgrade to netcoreapp3.0

* remove discoverys code

* remove unused files

* Code refactor

* code cleanup

* remove unused file

* upgrade nuget and upgrade framework to netstandard 2.1

* add async support for CAPTransaction

* bug fixed

* Typo: "Getting Stared"

* Add dashboard api interface

* Add Nodediscovry

* remove unused file

* upgrade dashoboard module

* Rename file

* Refactoring postgresql implementation for version 3.0

* Fixed mysql dashboard query bug

* Code refactoring

* Refactoring sqlserver implementation for version 3.0

* Refactoring mongo implementation for version 3.0

* Add index for mysql table

* Fixed sqlserver connection async issue

* Refactoring kafka transport implementation for version 3.0

* Refactoring inmemory storage implementation for version 3.0

* Refactoring azure serverbus transport  implementation for version 3.0

* Update samples to netcoreapp3.0

* Refactoring namespace

* Change System.Text.Json to Json.NET

* Code refactoring

* Rename class

* Fix obsolete

* Fix kafka consumer client bugs

* Fix sql reader  column index error

* Introduced rewrite table name option

* Introduced rewrite table name option

* Introduced rewrite table name option for pgsql

* Introduced rewrite table name option

* Fix SqlServer service injection bug

* Fix sql bug

* Fix Kafka transport check not working bug. #436

* code cleanup

* update samples

* Adjust dashboard display

* Refacing diagnostics tracing module.

* Code cleanup

* Remove outdated unit tests

* Add sync publish method with additional header

* update version to 3.0

* Add fake transport fot unit tests

* Support null value of message body.

* Rename class

* Rename class

* Fix mysql unit tests

* Fix  loops when configuration items are abnormal or unreachable. #444

* Refactoring

* Add sqlsever samples

* Schema renaming to lowercase is more conformant

* Fix SQL Server tranaction error in entityframework. #402

* update readme

* update ci yml

* Remove the database integration test

* fix build error

* upgrade mongo nuget package to 2.10.0, because 2.8.0  have bugs in .net core 3.0

* Fix mongodb dashboard query bugs

* update samples

* Fix postgresql storage bugs

* Fix build error

* Fix unit tests

* Fix build errorFix unit tests

* Add Kafka options to support  custom header to add offset and partition into CapHeader.  #374