1.6.0

Many Evernote fixes by @akosbalasko via #207

• Removed file name from note body, matching other importers
• #24, #187 Add support for nested tags and folders (notebook stacks), see documentation
• #26 Use correct formatting for tags front matter metadata
• #190 File name of a resource is cut off at the first dot
• #200 Imported notes do not include source links
• #201 Import loses files with the .dxf extension

Also includes a general fix by @lishid for #161 improve file name sanitization