fixed bugs in the preprocessor and added some labels
"..." characters get replaced with the label DOTS.
:)))))) smilies get processed correctly and an additional tag is added at the end that indicates the usage of enlarged smilies in this tweet
unknown hashTags are not deleted but added as tags and an extra label HASHTAG is added to indicate that this was a hashTag
improved the smilie regex
added new label ENLARGED_WORD that appears the number of times a word got enlarged (maybe change to just 1 occurrence)