adds only new transactions
adds notifications
stores transactions for each 'user_product' instead of every 'user_institution'
the full_class_name method of the product model, takes its name from his own class instance
adds the signature to the transaction model
Merge pull request #2 from platanus/only-new-transactions

adds only new transactions
adds byebug gem
adds a status to transaction
adds active_model_serializers
adds serializers for user_product and transactions
sends notifications for each institution
notifies and changes the state of the transactions
adds task to notify
Merge pull request #3 from platanus/notifications

Notifications
chore: improves how crawler transactions are registered
Merge pull request #4 from platanus/register_transaction_improvements

chore: improves how crawler transactions are registered
fix: protect rake crawler when a institution has not defined a namespace
separates the 'TransactionsCrawler' class of each institution
sends username and password to the 'sign_in' crawler
Merge pull request #6 from platanus/refactoring

separates the 'TransactionsCrawler' class of each institution