Immanuel/nnn: My build of nnn with minor changes - nnn

My build of nnn with minor changes

Historia

Vidar Holen 1bf49c80e7 Some of the shell script fixes as per discussion (#389 ) * Improved completion support for files with spaces Filenames with spaces, both generally and for session names, will now complete as expected. * Misc shell script improvements See discussion on: `1cca9e4b72`		5 lat temu
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auto-completion	Some of the shell script fixes as per discussion (#389)	5 lat temu
clipboard-copier	Fix some cat abuses in code, plugins	5 lat temu
natool	Move scripts to misc	5 lat temu
nlaunch	Move scripts to misc	5 lat temu
nlay	Move scripts to misc	5 lat temu
packagecore	Add CentOS 8.0, Fedora 31	5 lat temu
quitcd	Some of the shell script fixes as per discussion (#389)	5 lat temu
test	shellcheck fixes	5 lat temu