Add support for detecting unregistered plugins using #plugin#Detect()
Add Usage example to README
Cache maktaba#path#Split() results for &runtimepath paths
Fix 'wildignore' breaking Plugin.HasDir and Plugin.IsLibrary
Bump version to 1.1.1
Merge pull request #46 from google/glob_flag

Fix 'wildignore' breaking Plugin.HasDir and Plugin.IsLibrary
Merge pull request #45 from google/leafdirs_speedup

Cache maktaba#path#Split() results for &runtimepath paths
Merge pull request #44 from google/addon_name

Respect plugin name from addon-info.json
Merge branch 'master' into plugin_detect
Bump version to 1.2.0 for new Detect func and RegisteredPlugins behavior
Merge pull request #42 from google/plugin_detect

Add maktaba#plugin#Detect to register plugins and trigger instant/
Fix uncaught E716 by explicitly checking has_key(…, 'name')

Somehow vim ends up not catching the E716 in maktaba#plugin#Install and
letting it bubble up.