fixed #3868. Add guard check to send method of HttpClient
fixes in the release notes
Release Notes improvements
[Jenkins] add linux build
Merge pull request #5609 from lmskater/add-linux-build

[Jenkins] add linux build
Merge pull request #5525 from andyque/bug3868

fixed #3868. Add guard check to send method of HttpClient
fixed #4300:fixed Label:draw location and BBOX is incorrect.
Improved release notes
Merge pull request #5603 from ricardoquesada/release_notes_fixes

Release notes fixes
new TOC for changelog
Merge pull request #5613 from ricardoquesada/changelog_toc

new TOC for changelog
minor fixes in RELEASE_NOTES

minor fixes in RELEASE_NOTES
fixed horizontal kerning is incorrect.
Refactoring GLView for desktop platforms, and adding protected method `updateDesignResolutionSize` for GLViewProtocol class.
Compilation error fixes for linux port (clang compiler).
Tab -> 4 spaces, remove unused spaces.
updateDesignResolution -> updateDesignResolutionSize.
Tab -> 4 spaces, remove unused spaces for CCGLView.h
Merge pull request #5612 from Dhilan007/develop_label

fixed #4300:fixed Label:draw location and BBOX is incorrect.
Merge pull request #5616 from dumganhar/glview-refactor

Refactoring GLView for desktop platforms, and adding protected method `updateDesignResolutionSize` for GLViewProtocol class.