added tracpy class file
Merge branch 'master' into tracpy_class
simplified inout.readgrid for inputting one or two file locations as needed
added files that are the start of a tracpy class and tests for that class
fixed inout for vertical grid info in separate file
updated tracpy class tests for vertical grid info
run_rectangle works with branch of tracpy now
changed input names to readgrid
changed input file names to be more intuitive
updating for i/o
rectangle or 2d test works!
fixed a name or two
updated test_rect.py to work with what we have so far in Tracpy class
initializing Tracpy class with input parameters now
changed test_rect to run tracpy with tracpy object
added calculations to tracpy class for some derived parameters
changed runfile to use Tracpy class object
added some function info
changed a bunch so that the step happens in the Tracpy class
fixed rectangle test to properly work forward or backward. Also eliminated some commented old code from run.py