Fix `*.plugin.zsh` file loading.
Merge pull request #36 from wrboyce/master

improve startup speed by only calling `compinit -i` once
Merge pull request #35 from kamipo/master

Fix `*.plugin.zsh` file loading.
Rollback #36. compdef is required by many plugins.

compinit has to be initialized before loading any plugins, since most of the
utilize `compdef`.
Mild refactoring.
Merge branch 'master' of github.com:zsh-users/antigen
add support for prezto plugins
Test cleanup with two plugins loaded.
Merge branch 'more-tests'
The `-n` in url/dir functions screws up things.

This was messing with `-cleanup`. The fix needs to add blank `echo`s after each
call to `-antigen-get-clone-url` and `-antigen-get-clone-dir` in `-cleanup`
function, or this. I think this is better.
Load `init.zsh` instead of `*.init.zsh`.

This is what prezto seems to be doing, from the source as of today.
Added tests for loading prezto's `init.zsh`.
Formatting.
Added notes on prezto support.
Remove tests for obsolete `-install` command.
Add/Unskip tests for bundle syntaxes.
Update messes plugins with `--no-local-clone` set.
make bundles install submodules
Use `--plugin-git` function to handle the clone.
Git seems to require cd-ing to the clone for submodule update.