Set version to 0.6-SNAPSHOT
Make sure progress bar label is visible by making the minimum width to 20%.

Fixes #853.
Improve exception for nonexistent local files
Simplified exception stack traces when file is not found.
Exception added to open() and fixed \r\n
The DelimitedInputFormat.open() method did not check if it has parsers
registered. Added throwing an exception when no parser is registered
when calling open. CsvInputFormat does now accept windows line endings
with standards settings. The |\r\n" will be replaced by "\n_"( _ is a
space)... To prevent from errors the returned length is set to the
space. So that this byte is known as parsed and will not get interpreted
anymore.
Functions can now implement ResultTypeQueryable to supply TypeInformation manually.
Extend Delta iteration parameters
Rework Spargel
Add Broadcast variabel support to spargel
Add translation tests for delta iterations
Add translation tests for spargel
Add spargel compiler test.
Fix restrictions with branches in broadcast variables and iteration closures
Fix potential bug due to unnecessary cast from long to int in FSDataInputStreamWrapper
Implement toString of CsvOutputFormat
Rework stratosphere-clients tests to not expect a binary blob in the test resources (build the jar file using maven)
add a test for ensuring the presense of a custom classloader in the CliFrontend
Add missing ClassLoader for the "info" command in the CliFrontend
Remove setUserCodeClassLoader() from PackagedProgram and use partial mock in respective test case
Fixes bugs where the TypeExtractor throws an NPE instead of the operators
Fix maven enforcer plugin warnings in Eclipse
Fix dependency exclusion for examples in yarn-uberjar
Offer buffer-oriented API for I/O (#25)

https://github.com/stratosphere/stratosphere/issues/25

The runtime offered a record-oriented API for data transfers, which
* resulted in unnecessary data (de)serialization,
* complicated the upcoming fault tolerance implementation, and
* blocked more efficient implementations of higher-level operators.

With this commit, the runtime offers a buffer-oriented API for the
output side (sending), which is oblivious to records. The buffer
oriented input side (receiving) is still to be implemented.
Replace custom Java NIO TCP/IP code with Netty 4 library
Add debug log messages to Netty stack
Check number of designated buffers before returning buffer to BufferAvailabilityListener