update font kibitaki

Closes #254.
update font Koruri

Closes #253.
Merge pull request #256 from caskroom/fix-253

update font Koruri
Merge pull request #255 from caskroom/fix-254

update font kibitaki
update font-gentium-plus

* new-style header
* set version
* re-use version
* checksum
Merge pull request #257 from rolandwalker/update_gentium_plus

update font-gentium-plus
Add Rounded M+, version 20140812
Update font M+ to v1.059
Merge pull request #261 from izumin5210/font-m-plus-1.059

Update font M+ to v1.059
Merge pull request #262 from izumin5210/add-font-rounded-m-plus

Add Rounded M+, version 20140812
sync font token docs/code with main repo

What used to be called "name" is now referred to as "token"
Merge pull request #263 from rolandwalker/sync_font_token_with_main

sync font token docs/code with main repo
Remove input-mono-for-powerline

Upstream package has been discontinued.
Merge pull request #265 from ndr-qef/casks/input-mono-powerline

Remove input-mono-for-powerline
Add Inconsolata-LGC Latest
update the downloading url of source-sans-pro.
Update source-serif-pro to 1.017R
Merge pull request #266 from tonyseek/font-source-sans-pro

Update the downloading URL of source-sans-pro.
Merge pull request #267 from ndr-qef/adobe-source

Update source-serif-pro to 1.017R
Switch source-code-pro to GitHub-hosted package