### Bug fixes

• Fixed a bug in which import_gtfs() would append a .txt extension to non text files found inside the GTFS feed, which would lead to an error when attempting to unzip the feed. The function now ignores non text files when reading feeds, and raises an informative warning message if any of such files is found (#23).

### Notes

• Started converting more warnings to messages when quiet = FALSE in import_gtfs() and export_gtfs().

### Bug fixes

• import_gtfs() would raise a bit64-related warning when the first row of any table included a 64-bit integer. This is now fixed - when reading the first row to figure out which fields are present, all columns are read as character vectors.

### New features

• Added (internal) input assertion functions, which declutter the input checking sections quite a bit.
• Added new (internal) gtfsio_error() function, which raises a custom-classed error condition. All errors raised in gtfsio’s exported functions inherit from gtfsio_error and <function_name>_error, which allows for easier and more clear error catching.

### Potentially breaking changes

• Files and fields checking functions had their names changed. They now use the singular form, instead of the plural (i.e. check_fields_exist() was substituted by check_field_exists()). This shouldn’t raise reverse dependencies concern, because as of now only gtfstools dev version uses such functions, which is an easy fix that doesn’t concern CRAN release.

### Bug fixes

• import_gtfs() would ocasionally include the full path to a table to their name in a GTFS object (#17). Fixed by Mark Padgham (@mapdge) in #18.

### New features

• Added new summary.gtfs method. Thanks Mark Padgham (@mapdge).
• import_gtfs() has a new encoding parameter, used to handle encoded strings in their native encoding.

### Bug fixes

• Fixed a bug (or perhaps, changed the behaviour) of check_fields_exist() and check_fields_types() when a lower-level test (i.e. if the file that holds such field exists, for example) failed. Now it returns FALSE instead of raising an error.

### Bug fixes

• Fixed a bug in export_gtfs() when as_dir was set to TRUE and path was set to tempdir() in #15. The function now returns an (intentional) error if tempdir() is passed to path. Thanks Flavio Poletti (@polettif).

### New features

• import_gtfs() has a new skip parameter. It may be used similarly to files, but you specify the files you don’t want to read, instead of the ones you do. Thanks Flavio Poletti (@polettif).
• First CRAN release!