Welcome to SLib project!
You can see last release note here: SLib: Simplifying Power, Limitless Flexibility! - #19 by Mahan
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The fastest answer to the question “What is SLib?”
SLib is a versatile library whose functions are used in any project, SLib improves code quality several times, increases its readability, prevents errors, and thus makes your project better and faster than before! The following code is just one of the things that SLib does:
With SLib: Just 1 Line, Just 1 Parameter For Work As Well, Automated Error-Handling, With Very Simple Syntax! 
Any code is even shorter than the text you’re writing about!
# This one line of code creates a backup of the player's data file with an optional
# suffix next to it, it has the ability to check all types of errors and manage them,
# prevent syntax errors, repeating lines and code length.
SLib.backup_file("user://main_data.json", TYPE_DICT)
Without SLib: 11 Lines, Repeate Lines 
, Generate Useless Variablesm, Difficult Sytax 
It’s so long that by the time you get to the end, you’ll have forgotten what this code is for…
# These 11 lines of code do the same thing as one line above, with the difference that
# the file suffix and path must be specified in several places each time.
# and creates variables that are no longer usable!
var target_file = "user://main_data.json"
var file_access := FileAccess.open(target_file, FileAccess.READ)
var json_string := file_access.get_line()
file_access.close()
var json := JSON.new()
json.parse(json_string)
var data = json.data
var backup_json_string := JSON.stringify(data)
var backup_file_access := FileAccess.open(target_file.get_basename() + "-Backup." +target_file.get_extension(), FileAccess.WRITE)
backup_file_access.store_var(backup_json_string)
backup_file_access.close()
, installation guide from AssetLib:
, we’re thrilled to announce the launch of version 1.1.0 beta 1 today! With an astounding 600 changes and the longest changelog in our history, SLib is on the cusp of a stable release, and we can’t wait for you to explore the significant enhancements in structure and documentation. 
Check out our project’s public webpage:
Towards the Stable Version!
update. But what has happened in this time? Let’s take a look together!
