PublisherKit
                                An open source implementation of Apple's Combine framework for processing asynchronous events over time
                            
                        How to download and setup PublisherKit
Open terminal and run command
                                            git clone https://github.com/ragzy15/PublisherKit.git
                                        
                                        git clone is used to create a copy or clone of PublisherKit 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 PublisherKit https://github.com/ragzy15/PublisherKit/archive/master.zip
Or simply clone PublisherKit with SSH
                                            [email protected]:ragzy15/PublisherKit.git                                    
                                    If you have some problems with PublisherKit
You may open issue on PublisherKit support forum (system) here: https://github.com/ragzy15/PublisherKit/issuesSimilar to PublisherKit repositories
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