0.5.0

Important changes:

• Most functions are now methods associated to classes
• The methods in accessionid and taxid now take as arguments: the database type and either a SQLite, MySQL or Postgres database followed by the necessary arguments depending of the database type
• The est, gb, gss, wgs and prot tables have been merged in one accession table
• A chunk size limit has been added (prevents running into too many SQL variables )