How to download and setup 13
Open terminal and run command
                                            git clone https://github.com/eliasku/13.git
                                        
                                        git clone is used to create a copy or clone of 13 repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with 13 https://github.com/eliasku/13/archive/master.zip
Or simply clone 13 with SSH
                                            [email protected]:eliasku/13.git                                    
                                    If you have some problems with 13
You may open issue on 13 support forum (system) here: https://github.com/eliasku/13/issuesSimilar to 13 repositories
Here you may see 13 alternatives and analogs
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