Merge pull request #109 from johnheroy/master

Working .grid file import
move git functions into single file
remove functions directory
hook up importXLSX function
regex filter for .xlsx file
user chooses xlsx file and target directory for .grid file
Merge pull request #110 from gregfedirko/master

started import functionality
formula bar kind of works
Merge pull request #111 from NickStefan/master

formula bar kind of works
ready to start gridify
write grid file structure
Merge pull request #112 from gregfedirko/master

gridify complete
Removed some logs
Implementation of the takeSnapshot function
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