Revert "Merge pull request #31 from spdin/maestro_servo"

This reverts commit 2c1406b01161c5271a5c920e1823ea176443cf7f, reversing
changes made to aab0e1fe53a86bd1ced6a75ab7ef44221fd0118e.
Revert "Merge pull request #30 from spdin/rc-2"

This reverts commit aab0e1fe53a86bd1ced6a75ab7ef44221fd0118e, reversing
changes made to b49baae66522c91404c6ad20a480afa5cc0ef53c.
Revert "Merge pull request #29 from spdin/attitude"

This reverts commit b49baae66522c91404c6ad20a480afa5cc0ef53c, reversing
changes made to c164e463d03a48c43cb52e09aea8786c4c27937b.
Revert "Merge pull request #28 from spdin/sensor-2"

This reverts commit c164e463d03a48c43cb52e09aea8786c4c27937b, reversing
changes made to 7b21aa60b158ca208d3629fd0d73cd06db0b3850.
Revert "Merge pull request #27 from spdin/matrix_lib"

This reverts commit 7b21aa60b158ca208d3629fd0d73cd06db0b3850, reversing
changes made to b8f85551dfcd735e0eea939a415428f59654b207.
(1) refine motor lib, (2) fix some unit test scripts
remove unused dir
Merge pull request #32 from tttor/ee-intgr

Ee intgr:
@spdin: merges of pull request 27, 28, 29, 30, 31 are reverted
@hendruw: motor lib was refined, take a look when you have time :)