* v0.3.14
- add optional ~serialize~ submodule to serialize to / from HDF5 files
- allow tilde =~= in paths for ~readCsv~
- add ~rows~ iterator to get rows of DF as single row DF
- add ~[]~ with single int index to get single row of DF
- add ~dropNaN~ helper to remove rows of DF that contain NaNs
- minor fixes for regressions appearing in newer nim (duplicate case &
generic type resolution issue)