Mostly part number info
Aesthetics- Add four layer board warning
AnalogIC- add part number to LMV358
Connector- add part number to RA 1x3 .1" header
 - add 2x3 simple package, with and without silk
Digital- add part number to PCA9306, add part and value to symbol
 - Add part information to TXB0104
PowerIC- add dedicated MIC5205 part
Resistors- add 200k
Sensors- add part info to QRE1113
 - add part info to MMA8452Q
Merge branch 'master' of https://github.com/sparkfun/SparkFun-Eagle-Libraries