v 0.0.5

Major changes:

Minor changes:

All main functions now use a grep_fixed parameter to enable finer control over station name matching; thanks to @polettif via #66 for the idea.
That also includes a check to ensure matched stations are sufficiently close, which in turn requires geodist to be moved from Suggests to Imports.
route_pattern arguments (to gtfs_route/isochrone/timetable() functions) can now be used to exclude specified patterns by prefixing them with “!” (see #53)
The berlin_gtfs_to_zip() function now returns the path to the GTFS zip file it creates.
Fix bug with max_transfers parameter of gtfs_route() function (see #47)
Fix bug when column names do not exactly match expected values (#70; thanks to @AlexandraKapp)

v 0.0.4

Major changes:

New function, gtfs_route_headway to calculate headways for entire routes between any nominated points (see #43)
Important bug fix that prevents routes including stops that are not part of actual route

Major changes:

New function frequencies_to_stop_times thanks to new co-author @stmarcin, and new contributor @AlexandraKapp
Data without transfers.txt now load rather than error
New function gtfs_transfer_table makes transfer table for feeds which contain no such table; see #14
Main gtfs_route() function now accepts multiple from and to values, and returns a list of routes (see #28).

Minor changes:

extract_gtfs has new parameter, stn_suffixes, to enable specification of any suffixes to be optionally removed from station IDs (#37; thanks to AlexandraKapp).
Bug fix in station name matches in gtfs_route fn (see #26)
gtfs_route accepts stop_id values as well as stop_name (see #26)
gtfs_isochrone accepts equivalent stop_id values via from_is_id parameter.
both gtfs_route and gtfs_isochrone accept (lon, lat) values for from and to stations.
gtfs_isochrone returns stop_id as well as stop_name values (#29).
gtfs_isochrone returns arrival_time for all mid-points (#30, #36; thanks to @AlexandraKapp)
Former errors in reading of zip archives on Windows OS fixed