v0.27.0

• Manually inline set/clear_bit
• Don't cast fields with width 17-31
• Make generic.rs generic
• [breaking-change] Change initial write value for registers with modifiedWriteValues
• Update clap to 4.0, use irx-config instead of clap_conf
• Add #[must_use] to prevent hanging field writers
• Remove explicit deref in generic.rs since it's done by auto-deref
• [breaking-change] Make writing raw bits to a whole register safe if the SVD indicates
  so through the element (see [v0.7.1] too).
• Remove lint #![deny(const_err)] as it is a hard error in Rust now
• Add doc of using critical-section