init
Tidy variables

Change Colors to ease visual debugging.
add type 'double' for trig maths functions.
Improve descriptions for variables.
Fix some tiny typo in serial blocks causing command
'Serial.begin(9600);' to be added multiple time.
my tiny typo
 add junit to ardublock pom
add ignore annotation to mainTest
use TestNG
Repeat Loop blocks bugfix

Better 'for' loop (repeatControlBlock)
variable sockets must take lvalues
Better exception messages