HPC's CLI is awkward

hpc's command line interface could be brought more in line with other Haskell tools (and most CLIs I've used). I would expect all of the following commands to work:

hpc --version
hpc --help
hpc markup --help

Currently these commands are:

hpc version
hpc help
hpc help markup

Trac metadata

Trac field	Value
Version
Type	FeatureRequest
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Code Coverage
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information