Factored out monitor locking/unlocking.
Write heterogeneous data to hdf5 file.
Writing and reading the correct index.
Well, it seems like this approach actually works for Strings.
Extending HDF5 to handle heterogenous data, while still being compatible with pandas
Fixed takeType to handle Any/AnyVal/AnyRef; fixed readFrame on heterogenous frame
Replace try-catch with if statement
Plugged the leak in readGroupNames method.
Merge pull request #29 from folone/topic/hdf5

Plugged the leak in readGroupNames method.
Extended hdf5 reading group names test
Added additional types available for serialization to HDF5, while keeping pandas-readable