HyMacroExpansionError shouldn't truncate message

For example:

```
$ hy
hy 0.10.1 using CPython(default) 2.7.8 on Darwin
=> (defmacro hi [] (raise (TypeError "This message will be truncated")))
=> (hi)
  File "<input>", line 1, column 1

  (hi)
  ^--^
HyMacroExpansionError: `hi' message will be truncated
````
Typo fix in docs
Merge pull request #697 from Singletoned/master

Typo fix in docs
docs: Drop the HyLambdaListKeyword docs

HyLambdaListKeyword was removed a while ago, drop its documentation too.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Merge pull request #698 from algernon/h/docs/no-lambdalistkeywords

docs: Drop the HyLambdaListKeyword docs
Add @Singletoned to AUTHORS.
Various changes to documentation pages

- Standardized capitalization of Hy, Lisp(s), and Python.
- Added periods to the end of list items.
- Use inline code blocks for inline code.
- Stripped trailing whitespace.
- Other miscellaneous grammatical changes.
Merge pull request #699 from iKevinY/doc-fixes

Various changes to documentation pages
Add @iKevinY to AUTHORS.
Added explanation on Hy <-> Python interop
Added @Tritlo to Authors
Update Ed's email address.
Merge branch 'master' of https://github.com/Tritlo/hy into Tritlo-master
Tweak Python interop section a bit.
Merge pull request #694 from michaelmaltese/patch-1

HyMacroExpansionError shouldn't truncate message