Add ``asv find`` command.
Merge pull request #3 from mdboom/find-command

Dynamic subsampling of commits
Fix gh-pages
Fix for new version of setuptools
Fix encoding issues on Mac
Use known-working setuptools
Use process time instead of wall clock time.
Merge pull request #75 from mdboom/use-process-timer

Use process time instead of wall clock time.
Mention gh-pages command.
Improve formatting of benchmark names
Merge pull request #76 from mdboom/doc/publishing-to-website

Document how to run benchmarks under a build process
Add support to ignore .asv-machine.json
Merge pull request #81 from mdboom/machine-defaults

Add support to ignore .asv-machine.json
Add `continuous` command
Skip missing Python versions rather than throwing exception.
Merge pull request #83 from mdboom/skip-missing-python-versions

Skip missing Python versions rather than throwing exception.
Merge pull request #82 from mdboom/continuous

Add `continuous` command
Fix warnings

RuntimeWarning: Parent module '' not found while handling absolute
import
Add Conda environment plugin
Make virtualenv optional