`_zsh_autosuggest_widget_accept()` (&al.) passes this function's return status
on, and ZLE rings the bell if it's >0. Not having an original widget isn't an
error condition, so always returning 0 here should be OK to avoid the bell

Fixes #228

Fixes/support older versions

To support older versions of zsh (< 5.0.8).

We were missing the EXTENDED_GLOB option that allows use of `(#m)` flag.

This reverts commit 7f8ff2867c.

RHEL6 bundles v4.3.11
Ubuntu 14.04 and Amazon Linux bundle v5.0.2

v0.4.1

This fixes a small issue in src/widgets.zsh which makes it so if you
alias [ to g[ (as is done in prezto if the gnu-utility module is loaded)
autosuggestions would fail.

The documentation for GNU test mentions that -o and -a should be avoided
if possible because it's not very clear. Also, with zsh and [[ -o
actually tests if an option is set, which makes this option even more
confusing.

Now that patch has released

Use typeset -g to avoid warnnestedvar warnings

Fixes github issue #271

Simplify escaping of pattern and fix match_prev_cmd strategy

Seems like this would happen on some machines but not on others. Not
sure exactly what's going on, but this is such an edge case I'm just
going to remove the test.

https should work more broadly for folks

escape pattern-matching chars on $prefix for match_prev_cmd strategy

Maybe this is also a fix for #247, #248 and #258. Supersedes #267.

Testcase:
Using match_prev_cmd strategy and with these lines in history:
echo '1^'
echo '2^'
echo '1^'

type:
echo       (unexpected suggestion echo '1^' instead of echo '2^')
echo '1^1  (wrong suggestion echo '1^1echo '1^')
echo '1^#  (error "bad math expression")

replace tabs in Rubocop config with spaces

YAML does not permit tabs and many parsers will error when loading a tab-indented file - http://www.yaml.org/faq.html

Github #247 and #258

This commit adds the 'emacs-forward-word' widget to the list of partial
accept widgets.

Update README.md

Added installation instructions for AUR, Homebrew

v0.4.0

While they are still experimental

Fixes/bpm async fix

[GitHub #219]

Intended to be helpful for folks using bracketed-paste-magic and other
widgets that use `zle -U`.

Depends on patch to ZSH from workers/40702:

  http://www.zsh.org/mla/workers/2017/msg00414.html

Puts in a better fix for #126 and related issues.

Can attach while tests are stopped with `tmux -L <socket_name> attach`

Set up Circle CI

Fixes flaky test

There's no need to re-run feature detection or async_start on every
precmd. Just do those once.