This function works by downloading the DESCRIPTION file from a github
repo and then comparing the verison number with a provided value. If
the download fails or the github version is not newer than what is
installed, then it silently returns NULL. If the github version is newer,
the new version number will be returned
     
    
    Usage
    new_github_ver_avail(url, current_ver = NULL)
 
     
    
    Arguments
- url
 
character. url to the package to check's DESCRIPTION file.
 
- current_ver
 
character. Current version to check against
 
 
    
    Value
    character. Version number
     
    
    Examples
    url <- "https://raw.githubusercontent.com/drieslab/GiottoData/master/DESCRIPTION"
new_github_ver_avail(url, 0.2)
#> [1] "0.2.16"