Update documentation (csvw, ...)

[mchlrch]

Update documentation and mapping-examples in the rdf-mapping-dsl-user repository. Prepare the content on branch upcoming

• explicit source-types declaration by the user became unnecessary Source types as Enum Rules #42
• csvw: add separate chapter with specifics for CSVW output
  • null property: csvw: Support null property #39
  • optional dialect specification (see also Implement formatting rules #10 (comment))
  • ...
• ConstantValueTerm: airport-mapping.xrm#L15
• rr:sqlQuery (R2RML views) Support for R2RML views (conditional mappings) #29
• rr:parentTriplesMap Parent triple map support #31
• Add link to the CHANGELOG in the README
• Mandatory LINE_ENDS in map Housekeeping LINE_END ruleCalls #56
  * [ ] RdfPrefixedName with : Syntax involving prefixes with ':' instead of '.' #12
• (some) XML mapping support - issues
• formatter Implement formatting rules #10
• quickfix for missing classes and properties Provide quickfix for missing classes and properties #1 🐙
• rr:termType Support for using TemplateValuedTerm for literals (rr:termType) #30
• specify output format Explicit choice of the output format in the DSL #48
• carml extensions support carml extensions #15 Support carml XML namespace extensions #34
• DatatypeDefinitions inside vocabulary Merge DatatypeDefinitions into Vocabulary #66 also fix examples to use xsd:integer
• remplate re-use replaces LinkedResourceTerm Template re-use, templates as top-level elements #2

[mchlrch]

Also mention Project > Clean to force regenerating output #52

[mchlrch]

Mention how to disable Auto ignore derived resources in eclipse preferences:

Team->Git->Projects-> Auto ignore derived resources....

[mchlrch]

Also create a runnable mapping sample with carml-cli

[mchlrch]

Updated the documentation.

I favor providing more hands-on examples over bloating the language documentation:

• New issue for CARML XML sample Runnable XML mapping sample #86
• New issue for CSVW sample Runnable CSVW sample #87