Read Parkes-format TOAs; read RMS from tempo.lis more robustly.
Add GLS option to run_tempo()
Add get_ntoa function.
Add some functions for dealing with commented-out TOAs.
Add option to not process SKIP statements in toa files.
Add option to convert SKIPed TOA lines to commented ones.
tempo_utils: rename ignore_EMAX to process_emax
Make write method part of toalist class.
Fix run_tempo post-write_toa_file change.
Make tempo2 TOA identification work better.
Fix parsing that made tempo2/asp TOAs appear to be ITOA.
Merged PBD's fork.