Use compound locations in GenomeDiagram, not sub_features
Add a parts property to FeatureLocation for ease of use
doctest for CompoundFeature's strand property
More tests; cope with UnknownPosition in no-fuzzy start/end
Expand FeatureLocation docstring with doctests
Work in progress - addition to shift locations.

Still must implement subtraction (can already add a negative offset).

Must also decide if adding a fuzzy position (instead of a plain offset)
should be allowed - and if so what should it do? Means defining things
like addition of a BeforePosition and an AfterPosition. Messy.
Check feature location start/end vs min/max
Fix silly typo in doctest
CompoundFeature docstring updates
Clarify SeqFeature's sub_features is deprecated
Talk about CompoundLocation in NEWS file
Talk about CompoundLocation and sub_features in DEPRECATED file
Update fuzzy position text in tutorial (e.g. remove BetweenPosition)
Remove SeqFeature .sub_feature discussion from Tutorial

TODO - Replace with CompoundFeature examples.

No code or doctest changes, no need for TravisCI tests [ci skip]
Refactoring the SeqFeature section of the Tutorial.

Shouldn't have changed the doctests [ci skip]
More refactoring the SeqFeature section of the Tutorial
Remove historical references to very old versions of Biopython in Tutorial

No doctests changed,  [ci skip]
In efetch, use POST instead of GET if there are more than 200 ids; see bug #3411
Minor formatting consistency change (makes grep easier)
Remove deprecated Bio.Pathway.Rep.HashSet