Merge branch 'master' into marblemini

.travis.yml

README

litex_boards/community/targets/__init__.py

litex_boards/official/__init__.py

litex_boards/official/platforms/__init__.py

litex_boards/official/platforms/versa_ecp3.py

litex_boards/official/targets/__init__.py

litex_boards/partner/__init__.py

litex_boards/partner/platforms/__init__.py

litex_boards/partner/platforms/orangecrab.py

litex_boards/partner/targets/__init__.py

litex_boards/platforms.py

litex_boards/platforms/__init__.py

litex_boards/platforms/ac701.py

litex_boards/platforms/acorn_cle_215.py

litex_boards/platforms/aller.py

litex_boards/platforms/arty.py

litex_boards/platforms/arty_s7.py

litex_boards/platforms/avalanche.py

litex_boards/platforms/c10lprefkit.py