Py65

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- Fixed a bug in the monitor that caused loading from the command
line with "--rom" to crash.

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- Disassembling can now wrap around memory if the start address
given is greater than the end address.

- Fixed the disassembler to accept a range of "start:end" instead of
"start:end+1" for consistency with the other commands.

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- Assembling now detects syntax errors, overflows, and bad labels
separately and shows specific error messages.

- Fixed assembling 65C02 opcodes whose mnemonics have a digit
such as "RMB3".

- Reformatted source code to comply with PEP8.

- Fixed a bug where the MPU status display would wrap unexpectedly
on some terminals.

- Added support for 65C02 opcode 0x89: BIT .

- Added support for 65C02 opcode 0x7C: JMP (abs,x).

- Assembling now shows an Overflow Error if the statement won't
fit at the top of memory.

- Fixed a bug in the disassembler where instructions that wrap past
the top of memory would not be displayed properly.

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- Fixed a bug where negative numbers could be entered
for addresses in the monitor.

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- Fixed a bug that caused ``help cd`` to raise an exception
in the monitor.

- Fixed a bug in the 65C02 simulation where the opcode 0x7A
was named "PHY" instead of "PLY", causing incorrect assembly
and disassembly. Thanks to Brian Cassidy for reporting it.

- Fixed the cycle count of 0xD2 (CMP zero page indirect) in
the 65C02 simulation. Thanks to Brian Cassidy for reporting it.

- Added "h" as a monitor shortcut for "help".

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- Added a new 65Org16 MPU simulation written by Ed Spittles.

- The monitor now accepts command line arguments. See
``py65mon --help`` for usage. Contributed by Ed Spittles.

- The monitor's load command can now fetch URLs.

- Python versions earlier than 2.6 are no longer supported.