Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Replace header insertion logic to avoid memory allocations

Add license headers, but only if they are not present

Add license headers, but only if they are not present

Add license headers, but only if they are not present

Add license headers, but only if they are not present

Запрос на слияние 'develop' (#5) из develop в master

code cleanup

added custom TreeCellRenderer for Tree nodes to use actual checkboxes instead of icons for more consistent ui. code clean up and formatting

Запрос на слияние 'feature/dependency-tree-search' (#4) из feature/dependency-tree-search в master Co-authored-by: Ilia Sazonov <poxvuibr@gmail.com> Co-committed-by: Ilia Sazonov <poxvuibr@gmail.com>