-d and -df options for specifying date/datetime columns, closes #33

Maintain lookup tables in SQLite, refs #17

--index option to specify which columns to index, closes #24

Test confirming --shape and --filename-column and -c work together #25

Use usecols when loading CSV if shape specified

--filename-column is now compatible with --shape, closes #10

--no-index-fks option

By default, csvs-to-sqlite creates an index for every foreign key column that is
added using the --extract-column option.

For large tables, this can dramatically increase the size of the resulting
database file on disk. The new --no-index-fks option allows you to disable
this feature to save on file size.

Refs #24 which will allow you to explicitly list which columns SHOULD have
an index created.

Added --filename-column option, refs #10

Fixes for Python 2, refs #25

Implemented new --shape option - refs #25

--table option for specifying table to write to, refs #10

Updated README to cover --skip-errors, refs #20

Add --skip-errors option (#20) [Jani Monoses]

Less verbosity (#19) [Jani Monoses]

Only log extract_columns info when that option is passed.

Add option for field quoting behaviour (#15) [Jani Monoses]