Changelog for markdown-0.1.17.5

Changelog for markdown

0.1.17.5

0.1.17.4

0.1.17.3

0.1.17.2

0.1.17.1

0.1.17

0.1.16

0.1.15

0.1.14

0.1.13.2

0.1.13.1

Fixes for GHC 7.10

0.1.13

Add msAddHeadingId.

0.1.12

Support for two spaces at end of line to create a linebreak.