FED3 Viz v0.4.1

Minor update with some changes and fixes:

• files are deleted when concatenated into new file
• motor turns summary stats error fixed
• summary stats name includes datetime
• summary stats now include "Correct Poke (%)" rather than "Left Pokes (%)" for newer FED code, older still calculate left
• improved visibility for multi pellet plots
• matplotlib warnings now ignored in exe
• add build_notes.txt to document build edits