Use async writer rahter than buffered one - this way we loose some
performance in case index offloading is not enabled, but we are able to
work with index even in multi threaded environment out of the box.

If user wants performance, indexing offloading is anyway the only way to
go.

Fixes #289

Many translators do not use correct unicode char and use ascii variant
instead, so let's be flexible here and allow it.

Fixes #305

In case user is about to switch branches, we should first commit pending
commits to original one.

Fixed #306

They again completely broke API, maybe it's time to move elsewhere.

Currently translated at 22.1% (183 of 829)

Currently translated at 85.0% (705 of 829)

Currently translated at 100.0% (829 of 829)

Currently translated at 91.3% (757 of 829)

Currently translated at 22.0% (182 of 829)

Currently translated at 83.5% (692 of 829)

Currently translated at 9.5% (79 of 829)

Currently translated at 100.0% (13 of 13)

Currently translated at 100.0% (829 of 829)

Currently translated at 99.6% (826 of 829)

Currently translated at 91.3% (757 of 829)

Currently translated at 100.0% (829 of 829)

Currently translated at 82.0% (680 of 829)

Currently translated at 9.4% (78 of 829)

Currently translated at 100.0% (829 of 829)

Currently translated at 100.0% (13 of 13)

Currently translated at 9.3% (77 of 829)

Currently translated at 91.2% (756 of 829)

Currently translated at 99.6% (826 of 829)

Currently translated at 100.0% (829 of 829)