[WIP] Shape segment length check

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Generated Code Changes Required

The following files may need to be regenerated. Please run go generate ./... and commit the changes:

diff --git a/doc/cli/transitland_extract.md b/doc/cli/transitland_extract.md
index ef4802c..a7c2c0b 100644
--- a/doc/cli/transitland_extract.md
+++ b/doc/cli/transitland_extract.md
@@ -73,8 +73,10 @@ trip_id,arrival_time,departure_time,stop_id,stop_sequence,stop_headsign,pickup_t
       --interpolate-stop-times           Interpolate missing StopTime arrival/departure values
       --normalize-service-ids            Create any missing Calendar entities for CalendarDate service_id's
       --normalize-timezones              Normalize timezones and apply default stop timezones based on agency and parent stops
+      --null-island-check                Check for Null Island in shapes.txt and stops.txt
       --prefix string                    Prefix entities in this feed
       --set stringArray                  Set values on output; format is filename,id,key,value
+      --shape-max-segment-length float   Maximum shape segment length in meters (0.0 to disable check)
       --simplify-calendars               Attempt to simplify CalendarDates into regular Calendars
       --simplify-shapes float            Simplify shapes with this tolerance (ex. 0.000005)
       --use-basic-route-types            Collapse extended route_type's into basic GTFS values
diff --git a/doc/cli/transitland_import.md b/doc/cli/transitland_import.md
index b49970b..46031ed 100644
--- a/doc/cli/transitland_import.md
+++ b/doc/cli/transitland_import.md
@@ -15,28 +15,31 @@ transitland import [flags] [feeds...]
 ### Options
 

•  --activate                 Set as active feed version after import
  

•  --create-missing-shapes    Create missing Shapes from Trip stop-to-stop geometries
  

•  --date string              Service on date
  

•  --dburl string             Database URL (default: $TL_DATABASE_URL)
  

•  --deduplicate-stop-times   Deduplicate StopTimes using Journey Patterns
  

•  --dryrun                   Dry run; print feeds that would be imported and exit
  

•  --ext strings              Include GTFS Extension
  

•  --fail                     Exit with error code if any fetch is not successful
  

•  --fetched-since string     Fetched since
  

•  --fv-sha1 strings          Feed version SHA1
  

•  --fv-sha1-file string      Specify feed version IDs by SHA1 in file, one per line
  

•  --fvid strings             Import specific feed version ID
  

•  --fvid-file string         Specify feed version IDs in file, one per line; equivalent to multiple --fvid
  

• -h, --help help for import

•  --interpolate-stop-times   Interpolate missing StopTime arrival/departure values
  

•  --latest                   Only import latest feed version available for each feed
  

•  --limit int                Import at most n feeds
  

•  --normalize-timezones      Normalize timezones and apply default stop timezones based on agency and parent stops
  

•  --simplify-calendars       Attempt to simplify CalendarDates into regular Calendars
  

•  --simplify-shapes float    Simplify shapes with this tolerance (ex. 0.000005)
  

•  --storage string           Storage location; can be s3://... az://... or path to a directory (default ".")
  

•  --workers int              Worker threads (default 1)
  

•  --activate                         Set as active feed version after import
  

•  --create-missing-shapes            Create missing Shapes from Trip stop-to-stop geometries
  

•  --date string                      Service on date
  

•  --dburl string                     Database URL (default: $TL_DATABASE_URL)
  

•  --deduplicate-stop-times           Deduplicate StopTimes using Journey Patterns
  

•  --dryrun                           Dry run; print feeds that would be imported and exit
  

•  --ext strings                      Include GTFS Extension
  

•  --fail                             Exit with error code if any fetch is not successful
  

•  --fetched-since string             Fetched since
  

•  --fv-sha1 strings                  Feed version SHA1
  

•  --fv-sha1-file string              Specify feed version IDs by SHA1 in file, one per line
  

•  --fvid strings                     Import specific feed version ID
  

•  --fvid-file string                 Specify feed version IDs in file, one per line; equivalent to multiple --fvid
  

• -h, --help help for import

•  --interpolate-stop-times           Interpolate missing StopTime arrival/departure values
  

•  --latest                           Only import latest feed version available for each feed
  

•  --limit int                        Import at most n feeds
  

•  --normalize-timezones              Normalize timezones and apply default stop timezones based on agency and parent stops
  

•  --null-island-check                Check for Null Island in shapes.txt and stops.txt
  

•  --shape-max-segment-length float   Maximum shape segment length in meters (0.0 to disable check)
  

•  --simplify-calendars               Attempt to simplify CalendarDates into regular Calendars
  

•  --simplify-shapes float            Simplify shapes with this tolerance (ex. 0.000005)
  

•  --storage string                   Storage location; can be s3://... az://... or path to a directory (default ".")
  

•  --use-basic-route-types            Collapse extended route_type's into basic GTFS values
  

•  --workers int                      Worker threads (default 1)
  

### SEE ALSO