Expose levelDB object

[pdeziel]

This exposes the underlying levelDB object to the user to make it easier to do things like backups.

[codecov]

Codecov Report

Merging #20 (378c4dc) into main (b3f3099) will decrease coverage by 0.04%.
The diff coverage is 50.00%.

❗ Current head 378c4dc differs from pull request most recent head 36ebb59. Consider uploading reports for the commit 36ebb59 to get more accurate results

@@            Coverage Diff             @@
##             main      #20      +/-   ##
==========================================
- Coverage   55.81%   55.77%   -0.05%     
==========================================
  Files          10       10              
  Lines         550      554       +4     
==========================================
+ Hits          307      309       +2     
- Misses        198      200       +2     
  Partials       45       45              

Impacted Files	Coverage Δ
engines/leveldb/leveldb.go	84.70% <0.00%> (-2.05%)	⬇️
honu.go	46.98% <100.00%> (+0.64%)	⬆️

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[bbengfort]

Looks good - I'll go ahead and merge and tag this so we can work on the backup manager in trtl; use go get -u github.com/rotationalio/honu@v0.2.8 to update to the current version.

For the undelete test, is the test failing matching the total keys count or is it some other test that was removed? I can take a look at it right now before bumping the version if that would help.

[bbengfort]

good type assertion!

[pdeziel]

If you add a totalKeys++ to line 110 after the undelete you'll see the count mismatch.