docs: another pass through
docs: minor edit
serve: replace getitem calls with []
serve: parse_index preserves internal lists
serve: allow POST and GET methods
serve: add simple client data descriptor
serve: get_dynd, also comments and cleaning
serve: client test iter and chunks
serve: clean up imports
add requests to dependencies
serve: use flask.json instead of json

For py3 string issues
into implementation DataFrame -> nd.array
Merge pull request #1 from mwiebe/into

Implement into for DataShape -> nd.array
into: add DataFrame <- CSV
combining 'Distinct' with 'By' and column select shows some shortcomings
needed to add __slots__ to Distinct
expr: move count, distinct, nunique from column to table
python: column of column
expr: add TableExpr.iscolumn property
expr: TableSymbol.iscolumn keyword argument
compute: use iscolumn to resolve Distinct(column) issue