Adjustment key size.
Debug.
Add history button to categories.
Delete buttons of history, favorite and settings.
Delete category scroll buttons.
Delete space key.
Create HistoryManager.
Optimized ime layout.
Debug.
Android studio version up to "0.8.2".
Merge branch 'master' into improvement

Conflicts:
	EmojidexAndroidLibrary/src/main/java/org/genshin/emojidexandroid/EmojiData.java
Adjust resize textview when show ime.
Remove clear&paste button and search button from editor.
Merge remote-tracking branch 'origin/master' into improvement

Conflicts:
	EmojidexAndroid/src/main/java/org/genshin/emojidexandroid/EmojidexIME.java
	EmojidexAndroidLibrary/src/main/res/values/strings.xml
Oprimize imports.
Merge pull request #16 from emojidex/improvement

Improvement