switch units to unit in ipac reader
remove pending
switch to different format checking if warning raised
use tom's suggestion for catching warnings
update warning test in row
import warnings, duh
fixed docstring dtypes reference
Revert "fixed docstring dtypes reference"

This reverts commit 92629acd1a9a8074e988075bb771ddd0de51124f.
redoing reverted code because push failed
Integer+fractional day implementation, using double-doubles.
Tests adapted as well.
fixed table_types issue
Merge pull request #1174 from adrn/table/singular-unit

table: change 'units' to 'unit' and 'dtypes' to 'dtype'
Add developer guideline for testing warnings
Fix PEP8 in io.ascii with autopep8 --max-line-length=100
Fix a few places where autopep8 made a bad choice
explicitly stated that we follow the PSF code of conduct
Add Remove rows subsection to table mod docs
Merge pull request #1239 from taldcroft/doc/test-warnings

Add developer guideline for testing warnings
Merge pull request #1240 from taldcroft/ascii/pep8

Fix PEP8 in io.ascii with autopep8 --max-line-length=100
Fix examples in docstrings in utils.data