Parser improvements

Included in this release:

• Allowed more separator characters for the tag number (#2)
• Improved the branch and tag detection.
• More flexible and lenient parsing.
• Added the VersionTag class to hold tag and branch information.
• Added getTagInfo() to retrieve the VersionTag object.
• Added isStable(), isDev() and isPatch().
• The stable tag type is now recognized as well if present.
• Added short tag name parameter to registerTagType().
• Spaces are now supported as separator characters.
• More special characters are now filtered out.
• Added toArray(), mostly for debug reasons.
• Split the parser into several specialized subclasses.
• Deprecated setUppercase() - use setTagUppercase() instead.
• Deprecated getTagWeights() - use the TagWeights class instead.