Log Message:
angband: Update to 4.2.1

  Summary of Changes

     * percentage combat is refined to become an actually playable option
     * improvements to throwing
     * udate to town generation
     * a major update to the new blackguard class
     * several tweaks to the other new classes
     * many improvements to the MacOS front-end particularly, but also others
     * improvements to tiles
     * addition of fancy color-cycling of monsters
     * configurability of charecter sheet
     * inclusion of some new, rare level types
     * experimental Windows curses and SDL2 console ports added
     * many small bugs fixed and quality-of-life improvements made