Grid Tables (#718)

* Add table examples

* Add table types and adopt simple parser

Simple parser is done by Giovanni Cappellotto (@potomak)
in https://github.com/haskell/haddock/pull/577
It seems to support single fine full tables, so far from full
RST-grid tables, but it's good start.

Table type support row- and colspans, but obviously parser is lacking.

Still TODO:
- Latex backend. Should we use multirow package
  https://ctan.org/pkg/multirow?lang=en?
- Hoogle backend: ?

* Implement grid-tables

* Refactor table parser

* Add two ill-examples

* Update CHANGES.md

* Basic documentation for tables

* Fix documentation example

1 files changed, 12 insertions, 0 deletions

diff --git a/haddock-library/fixtures/examples/table1.input b/haddock-library/fixtures/examples/table1.input
new file mode 100644
index 00000000..a007020c
--- /dev/null
+++ b/haddock-library/fixtures/examples/table1.input
@@ -0,0 +1,12 @@
++------------------------+------------+----------+----------+
+| Header row, column 1   | Header 2   | Header 3 | Header 4 |
+| (header rows optional) |            |          |          |
++========================+============+==========+==========+
+| body row 1, column 1   | column 2   | column 3 | column 4 |
++------------------------+------------+----------+----------+
+| body row 2             | Cells may span columns.          |
++------------------------+------------+---------------------+
+| body row 3             | Cells may  | \[                  |
++------------------------+ span rows. | f(n) = \sum_{i=1}   |
+| body row 4             |            | \]                  |
++------------------------+------------+---------------------+