Fix issue #1 - Add feature for closing open files of other projects or all files of the same project as the current file
[ui] fix separators, bring similar actions together
Fix issue #1 - Add feature for closing open files of other projects or all files of the same project as the current file

add dependencies
[doc] update metadata
[internal] update project files
[internal] update gitignore
[doc] update example screenshot
[release] increase version number (to 1.1)