first version
upgrade to Hadoop 1.2.1 to support arbitrary row delimiters in LineReader
add switches for numeric ordering and user-defined row delimiters
add configuration options for numeric ordering, row delimiters and task timeout
replace delegated LineRecordReader with one supporting user-defined row delimiters
switch from using a Text key to an ArrayWritable key, to support integer sort ordering
switch from using a Text key to an ArrayWritable key
add method to support writing records with a user-defined row delimiter
modify tests to support array-based extractKey approach
add tests for numeric ordering and user-defined row delimiters
remove old formatter as it is no longer compatible with array-based key