Multiple bug fixes, better management of environment variables for

sub-process

Upodated workflow

New checksums, updated to 3.0.1

Bug fixing with fork and environment variables

pwd shows bookmark name (~/Documents) rather than long name

Fixes for scp/sftp/ssh interactive mode

Fixed an issue with setenv in execve

Merge pull request holzschu#107 from yury/cleanup-imports

Cleanup imports.

Added Package.swift

Changed APPLICATION_EXTENSION_API_ONLY to YES for Shortcuts