Add Chinese translation. Not yet functional due to #192.
Make sure that `item_type` is Unicode
Various Unicodification changes
Fix missing wildcards in zh_CN.ts (#192)
Bump to 0.27.4~pre1
Minor fixes to French translation
Update zh_CN.ts
Add `flush()` method to `output_buffer` objects.
Merge pull request #193 from zqlinju/patch-1

Update zh_CN.ts
Merge remote-tracking branch 'origin/playground' into playground
Intercept `psychopy.core.quit` to avoid the process from being killed.
Update `zh_CN.qm`
Improvements and fixes to checkbox and rating_scale form widgets (#189)
Convert advanced_delay plug-in to new-style API and fix issue #199.
Use `color` keyword argument in `canvas.arrow()`. Fixes #198.
Prevent key names like `[1]` to avoid variable errors (#197)
- Convert openexp._keyboard.legacy to Unicode
- Deprecate keyboard.shift()
Unicodify html parser
Reset HTML parser before each text rendering (#196)
Make HTML parsing optional in sketchpad items (#195)
Update debian/changelog