Use a more logical set of SP_MODE_* flags.
Make sp_flush take an option for what to flush.
Add sp_drain() function.
Add sp_start_break() and sp_end_break() functions.
Add sp_get_signals() function.
Add missing @param port entries to documentation.
Add missing @param port entry to documentation.
Define SP_PARITY_* more logically.
Merge branch 'open_api'
Merge branch 'flush_api'
Merge branch 'new_operations'
Merge branch 'ocd'
Fix to sp_flush() on Unix.