v0.4.1

• add avml-upload (#15)
• use argh for argument parsing (#27)
• use Path instead of str for arguments (#29)
• use azure-sdk-for-rust crates (#30) (#44)
• when writing to /dev/stdout without specifying a source, only copy from one source (#35)
• update 3rd-party libraries (#36) (#39) (#40) (#41)
• skip 1MB blocks of nulls when running with --compress (#45)
• read 1MB blocks page by page (#46)