Get rid of extraneous src/ directory

[Tracking bug 23893]
Move BasH5IO module to the shameful "deprecated" directory

[Tracking bug 23893]
Rename modules to avoid name clobbering

[Tracking bug 23893]
Add FastaTable class from DumbView

[Tracking bug 23893]
ReferenceEntry now deprecated as well.

[Tracking bug 23893]
Add a __repr__ for FastaTableRecord

[Tracking bug 23893]
Fix tests

[Tracking bug 23893]
FastaTable: Get slicing to work right, add tests

[Tracking bug 23893]