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Batch insert records on import, improves performance
Merge pull request #283 from moradology/feature/indicate-ttperformancebug

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Update Length tests to new interface.
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Merge pull request #285 from WorldBank-Transport/feature/length-tests

Update Length tests
Add RatioSuburbanLines test for SEPTA
Add test for transit network density; correct indicator
Merge pull request #294 from WorldBank-Transport/feature/ratio-suburban-lines-test

Add RatioSuburbanLines test for SEPTA
Merge pull request #293 from echeipesh/fix/gtfs-batch-insert

Batch insert GTFS records on import, improves performance
Remove errant debugging code and bad inheritance
Merge pull request #295 from moradology/feature/networkdensitytest

Add test for transit network density; correct indicator
Add Dwell Time performance indicator
Add test, fix stop period inclusion
Add param for pruning stops and fix parser bug