Max pain daemon:

- To calculate the `max_pain` first we need an expiration date,
get_expiration_dates()` retrieves them and the user then enters one of
the shown, then using the select expiry_date on `get_instruments()` we
are good to build the `oi_by_strikes` important!

- Add `update_oi_by_strikes()`.

- Add `check_if_complete()`.

- `get_max_pain()`: here's where all the action takes place, the
`oi_by_strikes` must be complete to start the calculations,

- Use `maybe_open_oi_feed` for open a oi_feed.

- Add `max_pain_readme.rst`

pyproject.toml

@@ -145,60 +145,3 @@ asyncvnc = { git = "https://github.com/pikers/asyncvnc.git", branch = "main" }
 tomlkit = { git = "https://github.com/pikers/tomlkit.git", branch ="piker_pin" }
 msgspec = { git = "https://github.com/jcrist/msgspec.git" }
 tractor = { path = "../tractor" }
-# ------ - ------
-pyqt6 = "^6.7.0"
-
-[tool.poetry.group.dev]
-optional = true
-[tool.poetry.group.dev.dependencies]
-# testing / CI
-pytest = "^6.0.0"
-elasticsearch = "^8.9.0"
-xonsh = "^0.14.2"
-prompt-toolkit = "3.0.40"
-cython = "^3.0.0"
-greenback = "^1.1.1"
-
-# console ehancements and eventually remote debugging
-# extras/helpers.
-# TODO: add a toolset that makes debugging a `pikerd` service
-# (tree) easy to hack on directly using more or less the local env:
-# - xonsh + xxh
-# - rsyscall + pdbp
-# - actor runtime control console like BEAM/OTP
-
-# ------ - ------
-
-# TODO: add an `--only daemon` group for running non-ui / pikerd
-# service tree in distributed mode B)
-# https://python-poetry.org/docs/managing-dependencies/#installing-group-dependencies
-# [tool.poetry.group.daemon.dependencies]
-
-[tool.poetry.scripts]
-piker = 'piker.cli:cli'
-pikerd = 'piker.cli:pikerd'
-ledger = 'piker.accounting.cli:ledger'
-
-
-[project]
-name="piker"
-keywords=[
-  "async",
-  "trading",
-  "finance",
-  "quant",
-  "charting",
-]
-classifiers=[
-  'Development Status :: 3 - Alpha',
-  "License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)",
-  'Operating System :: POSIX :: Linux',
-  "Programming Language :: Python :: Implementation :: CPython",
-  "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.11",
-  "Programming Language :: Python :: 3.12",
-  'Intended Audience :: Financial and Insurance Industry',
-  'Intended Audience :: Science/Research',
-  'Intended Audience :: Developers',
-  'Intended Audience :: Education',
-]