Lytspel

* POS-tag 'I' to distinguish the pronoun from the roman numeral.
* Add and correct some dictionary entries.

* Add and correct some dictionary entries.
* Declare project stable.

* Add and correct some dictionary entries.
* Add some more all-caps abbreviations to the list of known (and preserved)
words.
* Prevent URLs and email addresses from being converted.
* Create compact "Lytspel on One Page" document.
* Complete web app: file upload, show parts of README and various other
documents, sample pages, favicon, improved caching and logging.

Bugfixes:

* Removed inline type annotations which aren't yet supported by Python 3.5.
* Hyphenated prefixes such as "infra-" were erroneously counted as unknown
words.

* Added some missing words, especially all-caps abbreviations.

* Fixed some dictionary entries and added some others.
* Finalized initial version of web app.
* Finished README file, esp. documenting how pronunciation differences
between regional variants are resolved.

* Fixed some dictionary entries.
* Added -v/--version argument to print the version number
* Converted script into proper package.
* Started to create web interface.
* README: Started to document how BE/AE differences are handled.