2.5.0

Changes:

• -I command line parameter to ignore default .ini files
• Fast/slow polling serial retry strategy
• MacOS dmg build (again)

Fixes:

• Pause and pause@z improvements to keep OctoPrint interested while the bot is busy waiting for the user
• More logging for better diagnostics

Fixes by Chow Loong Jin:

• Off-by-one dda_rate calculation (-O2 Debian i386)
• Big-endian platforms
• Fix kFreeBSD build by making ENOSR optional