Add fixStack method
Add fixStack method

- Before sending a query to the server we use a dummy stack container
  to get the current stack trace and store it in the closure
- When a query has an error this method can be used to replace the
  current stacktrace with the stacktrace from the closure
- At the same time the first line in the stack trace ([object Object])
  will be replaced with the actual exception name and message
- The stack trace at the point where the error is discovered only
  contains references to node-cassandra-cql and is therefore not
  helpful for the user to figure out which part of his own code caused
  the error

layerhq/nodejs-driver,Teino1978-Corp/nodejs-driver,Applifier/node-cassandra-cql,connor4312/nodejs-driver,datastax/nodejs-driver,Applifier/nodejs-driver,ably-forks/nodejs-driver,jorgebay/nodejs-driver,jorgebay/node-cassandra-cql,chrisjsimpson/nodejs-driver,jonathanleang/nodejs-driver,datastax/nodejs-driver,thiagoveras/nodejs-driver