Merge pull request #98 from doug-martin/master

v0.2.18
Merge pull request #99 from doug-martin/master

v0.2.19
Merge pull request #100 from doug-martin/master

v0.3.0
Merge pull request #101 from doug-martin/master

v0.3.1
Merge pull request #102 from doug-martin/master

v0.3.1
Merge pull request #103 from doug-martin/master

v0.4.0
Merge pull request #107 from doug-martin/master

v0.4.1
Merge pull request #108 from doug-martin/master

v0.5.0
avoid starting a savepoint with {savepoint:false}
this should fix #109
typo

I decided to change "isolate" to "isolated" and not
the other way round because the documentation says
the option is called "isolated"
reverted two wrong changes
Merge pull request #110 from cvlmtg/master

problems with the new "isolated" option
v0.5.1

* Update `comb` to `v0.3.0`
* Fixed issues with `savepoints` and update transaction to conform with docs. #110