0.3.0

• Added a timeout method to SpellLauncher. This allows to
  specify a timeout (in milliseconds) when reading from spawned
  process's output, so it no longer blocks your program infinitely if
  it stops outputting text.
• Added the following methods in SpellChecker to add words:
  • add_word: add a word for the current session;
  • add_word_to_dictionary: add a word to your personal directory
    (should be saved between sessions).

Breaking change: rename mispelled in IspellError to misspelled. Yes, it's quite a shame (but ironical) that the only breaking change in this release of a spell checker library comes from a spelling issue, but well...