v2.6.1

• delete/refine: fix adjusting indices
• build(deps): bump github.com/sirupsen/logrus from 1.8.1 to 1.9.0
• Add environment variable to switch the order of LINEFLAG and file
• Add missing export for EDITOR
• simplify test by removing parameter expansion
• Add vendored dependency google/shlex
• Tests for vgrep --show .. and various EDITOR values
• Support opening file at line number in nano
• Update dependencies
• Allow passing command with options through the $EDITOR env variable
• allow ripgrep to use configuration file
• Dockerfile: use golang:latest
• make .install.go-md2man: use go install