v2.7.0

• Added support for ruby 3.1, 3.2, 3.3. Dropped support for ruby 2.7 and below.
• Feature: Nori::Parser has a new option, :scrub_xml, which defaults to true, for scrubbing invalid characters (#72). This should allow documents containing invalid characters to still be parsed.
• Fix: REXML parser changes < inside CDATA to < (#94)
• Change: Object#blank? is no longer patched in.