support faux key creation in crypto plugins + tests

* abc plugin create method has been modified to take algorithm and
 bit length rather than mime type
Merge pull request #133 from reaperhulk/master

support faux key creation in crypto plugins + tests
Release for v0.1.59
Prepare for next release
Merge remote-tracking branch 'upstream/master'
Merge pull request #132 from jfwood/master

#131 Fix defect involving expiration dates with time zones; Add graceful handling of 500 errors in REST resources;
Release for v0.1.60
Prepare for next release
Require latest SQLAlchemy (8.1)
Merge pull request #136 from dmend/sqlalchemy

Require latest SQLAlchemy (8.1)
Release for v0.1.61
Prepare for next release
Clean up unit test suite; Remove print statements;
Modified readme to refer to the wiki home page;
Merge remote-tracking branch 'upstream/master'