opentripplanner 0.2.3.0

Added distance_balancing argument to otp_plan gives a small perfomance boost to multicore routing
Added get_elevation argument to otp_plan default TRUE, when FALSE returns XY coordinates rather than XYZ coordiantes and gives a 4% performance boost.
Removed helper code for dplyr::bind_rows as no longer required for dplyr 1.0.0

opentripplanner 0.2.2.0

Changes to support dplyr 1.0.0, package now needs vctrs 0.3.1
Added timezone support to otp_connect, otp_plan, and otp_isochrone fixing issue #54, see docs for details.
Added quiet argument to otp_dl_jar and otp_dl_demo
Fixed error in advanced features vignette, issue #57

Batch isochrones support added
Fix bug in correct_distances() when input is of length <= 2 or the distances never decrease
Fix bug in polyline2linestring() when elevation is length <= 2
New input argument to otp_plan() and otp_isochrone routingOptions this allows support for many more routing options to be set. Arguments walkReluctance, transferPenalty, and minTransferTime have been removed and replaced with routingOptions.
New functions otp_routing_options(), otp_validate_routing_options(), otp_check_java()
New data for internal package checking
Added support of the UK way property set (for OTP 1.5)

Disabled CRAN tests that fail on solaris OS, due to different wording of error messages