Preparation for Release 5.1.0

[slaff]

This issue is created to collect all the tasks we need to do before the 5.1 release.

Source Code

• Update Sming/Core/SmingVersion.h.
• Update Readme.md.
• Merge develop into master.
• Tag the source code in the master branch.
• Add upgrade document

New features

• Update Graphics library with Host Touch and basic control support #2679
• IOControl library updates #2680
• Feature: add support for the wokwi simulator #2688
• Add MPU6050 library and sample code #2655

Improvements

• Add CStringArray::join() method #2668
• Add MemoryDataStream::reset() method #2677
• Add TRange contains(TRange&) overload #2678
• Patch for TCP segment size calculation issue. #2658
• Switch katacoda links to killercoda #2663
• Update rp2040 pico-sdk to latest (1.5.1 with additional bugfixes) #2667

Bug fixes

• Fix CallbackTimer::start not in IRAM #2676
• Fix Rp2040 bug setting UART fifo receive level #2666
• Bugfix: Rp2040 and Host os_timer_setfn() can stall other timers #2672
• Fix IFS compile warnings/errors #2673

Changes

Deprecations

Breaking Changes

• Refactor command processor #2687

Security

All PRs scheduled for this release can be seen from here