### 0.2.0.0
- Removed dependency on packages *regex-compat* and *cond*.
### 0.1.4.0
- Use environment variable *VIMHL_BACKEND* to choose between vim flavors.
### 0.1.3.0
- Updated after Pandoc *2.8* and the *String-to-Text* migration.
### 0.1.2.4
- Removed *shebang* line as it may lead to compilation failures.
### 0.1.2.3
- Added support for older GHC *7.8*.
### 0.1.2.2
- Added Cabal flag *debug* (off by default) for printing how vim runs to
*stderr*.
### 0.1.2.0
- Better treatment of handles of temporary files.
- Using *WriteMode* for vim process *std_in* prevents vim from getting
unresponsive on *Ctrl-C* interrupts while still doing well its tasks.
- Using */dev/null* for vim process *std_out*.
- Exit program as soon as vim fails.