Branching for 4.5.0 release.
Correct version number.
Merge fixes from master.
Merge branch 'fix-compiler-warning' into release/4.5.0
Merge branch 'fix-license' into release/4.5.0
Merge branch 'fix-compiler-warning' into release/4.5.0
Skip tests properly under unittest.
Merge pull request #174 from enthought/fix-unittest-breakage

Skip tests properly under unittest.
Bump version number for final release.
Merge master in; conflict fixes in __init__.py and changelog.
Revert unintentional whitespace change.
Merge remote-tracking branch 'origin/master' into merge-4.5.0
Merge pull request #177 from enthought/merge-4.5.0

Merge 4.5.0 release branch into master