API/BUG: return np.nan rather than -1 for invalid datetime accessors values (GH8689)
Merge pull request #8695 from jreback/danger

API/BUG: return np.nan rather than -1 for invalid datetime accessors values (GH8689)
BUG: incorrect serialization of a CustomBusinessDay in HDF5 (GH8591)
DOC: minor v0.15.1.txt changes
Merge pull request #8699 from jreback/cbd

BUG: incorrect serialization of a CustomBusinessDay in HDF5 (GH8591)
BUG: bug in selecting from a Categorical with iloc (GH8623)
BUG: bug in groupby-transform with a Categorical (GH8623)
BUG: bug in duplicated/drop_duplicates with a Categorical (GH8623)
Merge pull request #8700 from jreback/cat

BUG: various Categorical fixes (GH8623)
BUG: setitem fails on mixed-type Panel4D
ENH: provide a null_counts keyword to df.info() to force showing of null-counts
BUG: fix reflected comparison operations for Categorical

By the time the comparison gets dispatched to _cat_compare_op, the first
argument becomes zerodim array and no longer passes isscalar test.

ENH: add pd.lib.item_from_zerodim to extract values from zerodim arrays

ENH: make pd.lib.isscalar detect pd.Period, datetime.date and datetime.time
Merge pull request #8701 from jreback/show_counts

ENH: provide a null_counts keyword to df.info() to force showing of null counts
Merge branch 'add-basic-zerodim-array-support' of https://github.com/immerrr/pandas into immerrr-add-basic-zerodim-array-support
BUG: Bug in Panel indexing with a list-like (GH8710)
ENH: add Index.is_monotonic_decreasing and Index.is_monotonic_increasing

Index.is_monotonic will have a performance degradation (still O(n) time) in
cases where the Index is decreasing monotonic. If necessary, we could work
around this, but I think we can probably get away with this because the fall-
back options are much slower and in many cases (e.g., for slice indexing) the
next thing we'll want to know is if it's decreasing monotonic, anyways.

see GH7860
ENH: support monotonic decreasing indexes in Index.slice_locs

also: NaN and NaT imply not monotonic
ENH/BUG: support Categorical in to_panel reshaping (GH8704)
CLN: move block2d_to_blocknd support code to core/internal.py
TST/BUG: support Categorical reshaping via .unstack
Merge pull request #8715 from jreback/panel_index

BUG: Bug in Panel indexing with a list-like (GH8710)
Merge pull request #8705 from jreback/to_panel

ENH/BUG: support Categorical in to_panel reshaping (GH8704)
Merge pull request #8680 from shoyer/reversed-monotonic-slices

ENH: slicing with decreasing monotonic indexes
BUG: Fix pandas.io.data.Options for change in format of Yahoo Option page

ENH: Automatically choose next expiry if expiry date isn't valid

COMPAT: Remove dictionary comprehension to pass 2.6 test

BUG: Add check that tables were downloaded.

ENH: Replace third_saturday function with Pandas offset

BUG: Check to make sure enough option tables are downloaded.

TST: Add sample options page during market open.

DOC: Add bug fix report to v0.15.1.txt for data.Options

BUG: Ensure that the value used for chopping is within the range of strikes.

TST: Add test for requesting out of range chop

BUG: Fix missing underlying price and quote time in first process data

BUG: Fix AM/PM on quote time

ENH: Refactor to expose available expiry dates

DOC: Update documentation for Options given Yahoo change.

DOC: Update documentation for Options given Yahoo change.

BUG: Undo accidental deletion of privat emethods

ENH: Add ability to use list as expiry parameter.

Also has year & month return all data for the specified year and month.

TST: Remove tests for warnings that are no longer in use.

DOC: Update docstrings of Options class.