This is a bugfix release which corrects some errors in the phonetization of the mid vowels and transcription of Central tones.

Added

• vPhon 2.0 requires Python 3. If you need to use Python 2, see v1.0.

Changed

• Since optparse is deprecated, upgraded to work with argparse.
• the -d, --dialect flag is no longer obligatory: vPhon will default to Northern dialect.
• Changed behavior of -o, --ortho flag which outputs Viet orthography along with IPA transcription. Like the -m, --delimit flag, this option now requires a delimiter.
• the -8, --cao option now returns sắc and nặng in checked syllables as 7 and 8, respectively, instead of 5b and 6b.

This is the final version of vPhon that will run under Python 2.

Note that v0.2.6 really should have been 1.0.0 as it broke backwards compatibility with earlier versions - I/O being via stdin and stdout.