Release version 1.4.0

Added:
- The -gamemode predicate as well as its -raid, -fractal, -strike,
  -golem and -wvw shorthands.
- The "trio", "twisted castle", "river", "broken king", "eater" and "eyes"
  bosses.

Changed:
- Better error handling for situations in which the cache file could not be
  found.
- Better error handling if malformed archives are found during the scan.
- Better output for WvW logs.

Fixed:
- Fixed an underflow when parsing WvW logs (leading to a panic in debug mode).