Wordsmith comments about word-frequency records.
Add .gitignore
things: Refactor.

Specifically:
* Remove dead assignments to _data and _stop_words.
* Convert _word_freqs from class field to instance field to avoid side effects.
* Remove no-op call ''.join(self._data) because self._data is guaranteed to be a string.
things: Port to Java.
things: Refactor DataStorageManager to be more idiomatic.
Merge pull request #15 from davidfstr/things-refactor

things: Refactor.
Merge pull request #14 from davidfstr/things-in-java

things: Port to Java.
Merge pull request #13 from davidfstr/patch-1

Wordsmith comments about word-frequency records.
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