Support :alpha, :beta, and :rc bump levels.
Update NEWS.md.
Technically :alpha, :beta, and :rc aren't semantic levels.

[ci skip]
Avoid need for double-escaping in :release-tasks.

As per the recommendation of @crisptrutski.
Point to the right help text in deploy auth message.
Formatting fix.

[ci skip]
Improve error message to change when args aren't all readable strings.
Pass a stringed symbol into bump-version instead of a keyword.
Add a :pom-location option to fix #1541
lein vcs TASK gives non-stacktrace message when unknown vcs.
signatures should match other defmethods
Document use of the SSH wagon. Fixes #1540.
Merge pull request #1543 from jakemcc/unknown-vcs-results-in-short-error-message

`lein vcs TASK` gives non-stack trace message when unable to detect VCS.
Merge pull request #1542 from jcrossley3/1541

Add a :pom-location option to fix #1541
Initialize the project to activate middleware, etc
Fix check task

Replaces `bind` with `binding`.
Merge remote-tracking branch 'jcrossley3/init-release'

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remove unnecessary quote escaping in composite profile example
Merge pull request #1549 from stuarth/patch-1

remove unnecessary quote escaping in composite profile example
Don't bump patch version in alpha/beta/rc bumps.

Fixes #1539.