5.1.1: * Fix hanging on large constraints * Render multi-line comments * Rename --tab-size to --indent-size * Don't add a spurious space for comments at the end of the file * Don't add trailing whitespace on <- * Disable PatternSynonyms * Put a newline before the closing bracket on a list

5.2.0:

* Default tab-width is now 2
* Supports .hindent.yaml file to specify alt tab-width and max
  column
* Put last paren of export list on a new line
* Implement tab-size support in Emacs Lisp

5.1.1:

* Preserve spaces between groups of imports (fixes #200)
* Support shebangs (closes #208)
* Output filename for parse errors (fixes #179)
* Input with newline ends with newline (closes #211)
* Document -X (closes #212)
* Fix explicit forall in instances (closes #218)
* Put last paren of export list on a new line #227

5.1.0:

* Rewrote comment association, more reliable
* Added --tab-size flag for indentation spaces
* Fixed some miscellaneous bugs

5.0.1:

* Re-implement using bytestring instead of text
* Made compatible with GHC 7.8 through to GHC 8.0
* Added test suite and benchmarks in TESTS.md and BENCHMARKS.md

5.0.0:

* Drop support for styles

4.6.4

* Copy/delete file instead of renaming

4.4.6

* Fix whole module printer
* Accept a filename to reformat

4.4.5

* Fix bug in infix patterns

4.4.2

* Bunch of Gibiansky style fixes.
* Support CPP.
* Tibell style fixes.

4.3.8

* Fixed: bug in printing operators in statements.

4.5.4

* Improvements to Tibell style.
* 6x speed up on rendering operators.