v1.8.0

• Document changes regarding executables in the current directory in go 1.19 and return error exec.ErrDot if this is the case. This error was previously ignored but makes it hard to debug why wkhtmltopdf was not found. See https://pkg.go.dev/os/exec@master#hdr-Executables_in_the_current_directory
• Clear internal buffer before calling Create() functions, see #102