Xontrib-macro

DisableInterrupt API fix.

Added `signal.DisableInterrupt`. This macro allows disabling SIGINT (Ctrl+C) for group of commands.

xsh
from xontrib.macro.signal import DisableInterrupt

echo start
with! DisableInterrupt:
echo 'sleep start'
sleep 10
echo 'sleep end'
echo finish

start
sleep start
[Press Ctrl+C]
KeyboardInterrupt will be raised at the end of current transaction.
sleep end
Exception KeyboardInterrupt: KeyboardInterrupt was received during transaction.

Fix links.

Added `format` to `data.Write`:

xsh
from xontrib.macro.data import Write

with! Write('/tmp/t/hello.xsh', chmod=0o700, replace=True, makedir=True, format={'name': 'world'}, verbose=True):
echo {name}

Make directories: /tmp/t
Write to file: /tmp/t/hello.xsh
Set chmod: rw- --- ---
Set exec: rwx --- ---

/tmp/t/hello.xsh
world

Fix `Path.expanduser`.

Added `macro.data.XmlBlock`.