Making coordUtils comply with PEP 8 (without breaking compat).
Merged in altitude and type changes.
Missed a merge conflict line.
Rewrite of coordConv. Still has bugs.
Fixed bugs and switched to (-180,180) system for longitude.
Merge branch 'develop' of github.com:vtsuperdarn/davitpy into feature-coordConv-improved
Changed defaults behaviour to an assert that start and end are acceptable.
Changed altitude to an optional argument.
Changed altitude and date_time requirements to general lists.
Added loads of comments as a how-to for expansion to handle new coord systems.
Minor formatting changes.
Altitude conversion added.
Added testing and made minor tweaks.
Added test results for 64-bit system
Update coordUtils.py

Added test results for a 64-bit system.
Merge branch 'develop' of github.com:vtsuperdarn/davitpy into feature-coordConv-improved
Minor formatting tweaks for PEP 8.
Merge branch 'feature-coordConv-improved' into develop