don't require loading daemon (since it imports ezca for not particularly
good reason), but requires enumerating options explicitly
here.

would be better if daemon didn't import ezca

python3 has builtins, instead of __builtin__ in python2.  This is mostly a
straight compatibility.  "reload" is not a built-in in python3, so we have
to also pull that from importlib.

This is NOT an overhaul of the whole import custom import handling, it just
allows for guardian to be imported by python3.

This includes one change that could affect python2: setting default level=0.
python3 builtins.__import__ does not support level=-1, which tells import
to automatically handle both absolute and relative imports.  Since we're only
doing absolute imports it should be safe to set this to 0.  Hopefully this
won't cause any problems.

This latest pcaspy release fixes redundant updates after initialization

This cleans up how REQUEST and REQUEST_ENUM records are updated, to
eliminate possible redundant updates.

Two main changes here:
* upstream adds Driver.setParamEnums() to update enum records
* upstream fixes to remove redundant updates

The later accounts for test suite changes.

However, there are still some race condition issues in upstream related to
updates that can occasionally result in double updates:

https://github.com/paulscherrerinstitute/pcaspy/pull/49

This issue results in occasional test suite failures (at the ~20%
level).

Hopefully these issues will be fixed in future upstream updates.

eliminate redundant confusing env file

Remove the command from the runit finish script that emails me.  This
was used during prototyping but is no longer needed.

more square for larger state number

This makes the MANAGED mode better distinguishable from AUTO for those
with red-green color blindnesses.

For emacs, narrow to region of specified object.  For gedit jump to first
line of object source.  Throw error if editor not supported.

shows state index numbers

was buggy.

Currently only has one module, nds, with one function, find_transitions,
which finds all node state transitions in a given time span via NDS

drop in shell now done with -s option.

previous python-git call required newer version than what's available on
some workstations.

setuptools has too many annoying quirks to deal with right now

* insists on installing dependencies
* won't create it's own install directories