* Add json support to gui
* Cli support
* Tests
* Zip fixed
* Always printing
* Zip
* Bound
* Improved CI
* More tests
* Maybe
* Different duplicate delete
* Unify progress data code
* Do not increment in threads values every time when finding file/folder(works quite good, may works bad with folders with ~several thousands of files)
* Partial changes
* Simplify creating tree_view
* Allow setting thread number in CLI
* Simplified code and add tests with help of copilot
* Update dependencies
* Split functions in big file finder
* Bad Extensions
* Thread handler bad extensions
* Progress handler
* Atomic counter
* All thread handler simplifying
* Simplifying
* More
* Again
* Btreemap simplifying
* Also
* Next
* Common dir
* Simplify music checking
* Similar Images coplexity
* Loading cache
* Hashes
* Split chunked hashes
* Split into multiple parts
* Last similar video piece
* Probably last part
* Cleaned
* Temp
* Improve a little documentation, add missing bad extension
* Allow to find the smallest files from CLo
* Show error when all directories are reference folders
* 2 more testing objects
* Add missing original preset
```
czkawka_cli dup --dryrun -d $(pwd)/folder -m1 -D aen
Found 2 duplicated files in 1 groups with same content which took 2 B:
Size - 2 B (2) - 2 files
/home/thomas/Development/czkawka/folder/a
/home/thomas/Development/czkawka/folder/b
----
-------------------------------MESSAGES--------------------------------
Delete /home/thomas/Development/czkawka/folder/a
Delete /home/thomas/Development/czkawka/folder/b
---------------------------END OF MESSAGES-----------------------------
```
This results in the same space saving but keeps the "deleted" files around.
$ mkdir hardlink
$ cd hardlink
$ echo a > a
$ cp a b
$ ln a c
$ touch -t 01010000 a
$ ls -il --time-style=full-iso .
25169323 -rw-rw-r-- 2 thomas thomas 2 2021-01-01 00:00:00.000000000 +0100 a
25169558 -rw-rw-r-- 1 thomas thomas 2 2021-01-31 18:11:08.298161098 +0100 b
25169323 -rw-rw-r-- 2 thomas thomas 2 2021-01-01 00:00:00.000000000 +0100 c
$ czkawka_cli dup --directories $(pwd)/hardlink -m 1 -f hardlink.result --delete-method HARD
$ ls --time-style=full-iso -li hardlink
25169323 -rw-rw-r-- 3 thomas thomas 2 2021-01-01 00:00:00.000000000 +0100 a
25169323 -rw-rw-r-- 3 thomas thomas 2 2021-01-01 00:00:00.000000000 +0100 b
25169323 -rw-rw-r-- 3 thomas thomas 2 2021-01-01 00:00:00.000000000 +0100 c