Update Symfony Dependencies

1.3.1

update composer.json

Vader Sentiment Release

Includes sentiment analysis tool, using the Vader algorithm.

Check if helper functions already exist

Merge pull request #27 from cicnavi/master

Declare helper function only if it does not already exist

Twitter Tokenizer

Merge pull request #24 from yooper/twitter_tokenizer

Twitter tokenizer

PHP >= 7

Merge pull request #22 from yooper/add_text_corpus

Add text corpus, lexical diversity algorithms and helper methods

Minor bug fix release and optimizations

v1.1.3.2

Add hash tag extract

Added New API Calls For Name Corpus

v1.1.3.1

added API methods to NameCorpus

Added US Name Corpus

v1.1.3

Add in name corpus support

Adding In Snowball Stemmer Dependency

v1.1.2

Adding snowball stemmer

Removed Snowball Stemmer

Snowball stemmer dependency was breaking installs.