v0.99.3

Merge pull request #266 from maarten-boot/development

add configurable QuotaStrings and NoneStrings, add more NonStrings and QuotaStrings after detecting new ones; messages to stderr only with verbose=True

Merge pull request #263 from maarten-boot/development

fix for LastWhois not being emptied between calls

Merge pull request #258 from maarten-boot/development

convert file with supported tld's to Dict

Merge pull request #256 from sorrowless/feat/cache-age

Add an opportunity to specify max cache age

Merge pull request #254 from maarten-boot/master

add tld 'vc'

Merge pull request #251 from maarten-boot/master

validate nameservers against dns output,  fix discrepancies where possible

Merge pull request #250 from maarten-boot/master

fix nameservers it

Merge pull request #247 from maarten-boot/master

add tld's: page, observer, mk, green , africa, mn

Merge pull request #244 from melax08/master

Fix regexp in ac tld