Changed file_writer method for adding new data
Added option for time-shifting data before plotting
Changed data type to64 bit real, 64 bit imag
Added option for delay-shifting data
Updated to work with ami files
Changed tx socket timeouts

rx socket timeouts were being modified by mistake
Updated AMISA.conf with antenna positions...

...and changed antenna numbering to index from 1 (like the rest
of the AMI documentation)
Ignore pickle files
Removing rogue .swp file