decoders: Fix incorrect 'outputs' fields. Only add items to 'outputs' if the respective PD actually has OUTPUT_PYTHON support implemented as of right now. Various decoders might get OUTPUT_PYTHON support later, but the 'outputs' field should reflect the current status.
all decoders: introduce a reset() method Move initialization code of protocol decoders from the constructor to a new reset() helper method. The libsigrokdecode backend could run this method several times to clear the decoder's internal state, before new data from another acquisition gets fed to decode() calls.
jtag_stm32: Fix incorrect handling of registers. The STM32F10xxx has two serially connected JTAG TAPs, the boundary scan tap (5 bits) and the Cortex-M3 TAP (4 bits). See UM 31.5 "STM32F10xxx JTAG TAP connection" for details. Due to this, we need to ignore the last bit of each data shift (and we currently ignore the 5 bits of the boundary scan tap).
All PDs: Minor whitespace and consistency fixes. - No newlines at the end of files. - No trailing ';' characters. - Comparison with None: Use 'is None' or 'is not None'. - Comparison with True/False: Use 'if cond:' or 'if not cond:'. - Various minor whitespace fixes.