Release Candidate for v1.0.0

Release Notes of v1.0.0-rc0

Added

• String comprehensions with csemver objects
• incBuild, incPrerelease functions to increment the last portion of the prerelease and build identifiers
• keys() and values() to retrieve view objects (in Python 2.7 as well as in Python 3) of the semver version parts.

Changed

• Replaced semver dependencies with own implementation
• Index operator now allows digit-strings or integers for the major, minor and patch key values.
• csemver.number property now returns a str instead of a dict.
  If you wish to get a tuple or a dict, just do tuple(a) or dict(a) where a is a csemver instance

Removed

• prerelease and build properties. They are now accessible through the index operator: a['build'], a['prerelease']