Release Amateja updates · thclark/rstcloth

Contents (#27)

Incorporates extensive and excellent work from @amateja - Thanks very much Andrzej!

Use tabulate to replace table handling code as suggested in #9.
BREAKING CHANGE: tabulate is now a dependency.
Add list-table support
Store reStructuredText data into stream instead of list (faster, especially if piping into a file)
BREAKING CHANGE: The RstCloth().data property is no longer a list but a stream, by default going to sys.stdout
BREAKING CHANGE: The write() method was removed. Instead of:
```
your_doc.write(output_filename)
```
You can either open the doc in an open context:
```
with open(output_filename, "w", encoding="utf-8") as fp:
    d = RstCloth(fp)
    d.title('Example Use')
```
Or, for minimal changes to your code if you were already using write, create the doc as you would before, but stream into a memory buffer, then write to file at the end:
```
import io
d = RstCloth(stream=io.StringIO())
d.title('Example Use')
with open(output_filename, "w", encoding="utf-8") as fp:
    fp.write(str(d))
```
List table width and widths options expansion
Admonitions added
Bibliographic fields added
Raw directives added
Contents directive added
Transition marker added

Field structure and wrapping improved
BREAKING-CHANGE: Indentation and wrapping may change (although all documents should still render)
Table indentation improved
Parameter type verification changed to type declaration
Type annotations added and docstrings supplemented
Quick start documentation updated and unified