converted I2C and SPI to Nysa
added simulation for SDRAM component
Changed the readme to be more like Olympus's README
added two functions to xilinx_utils

xilinx utils will now show all the possible versions
-added a script to find the most recent SIM files
added a terser module to be used in a similar

manner as 'runtests.py'
Changed indendtion on an example project
added debug flags and status messages
changed get_slave_at argument order

was:

index, type

now:

type, index

This correlates with format of the controller, it also fixed some
bugs
Ported over test_graph_manager from Olympus
added errors specific to guis
added graph controller tests

These unit tests are much more comprehensive than previous
unit tests
many design bug fixes found through unit testing
changed test associated with uart to SPI