Vote: Release 0.0.4

[benalexau]

Seems about time we made a new release given the issues resolved since 0.0.3 on 12 August (bugs: #18, #25; usability improvements: #21, #23, #26).

@krisskross and @phraktle, any thoughts on this (eg do we want to finalise the byte[] work in PR #22 first)?

[phraktle]

Before a release, I would suggest reviewing validations that are now potentially made redundant by the fix to Exception handling, which LMDB does yield a proper return code for.

I wouldn't close #3 quite yet (without working through the performance aspects), but I haven't had time to review. I suppose if there are no regressions in Dbi<ByteBuffer>, there's no harm in releasing preliminary Dbi<byte[]> support.

[krisskross]

We can leave #3 for later. To be honest, I forgot about the PR. Will check ASAP. Go ahead with the release.

[benalexau]

@phraktle I reverted part of commits made for issues #21 and #26. The C side is now being relied upon for the error creation. I left #23 in place given our separate continuing conversations re Txn ThreadLocal use.

I'll make a release in a few days, just to give a chance for us to determine what should happen with #23's guard.

[benalexau]

0.0.4 release completed.

Travis log: https://travis-ci.org/lmdbjava/lmdbjava/jobs/159506341

0.0.4 will be available from Maven Central after their indexing / replication is complete.