PetPlugin: price of change-nick command depends on the new nick length. Close #167.
Merge pull request #171 from rexim/issue_167

PetPlugin: price of change-nick command depends on the new nick length.
Added dice roller plugin
Added dice roller plugin to the core
Merge pull request #175 from Newlifer/develop

Dice roller plugin
Fixed issues with arguments for dice plugin
Merge pull request #180 from Newlifer/develop

Fixed issues with arguments for dice plugin
Fixed issue#178. Added plugin for funny answers of Horta!
Fixed issue#178
Fixed random range limits
Merge pull request #184 from Newlifer/develop

Fixed some issues and added some another
PetPlugin: prevent setting empty nickname. Close #172.
Merge pull request #185 from rexim/issue_172

PR for #172: PetPlugin: prevent setting empty nickname.
Core: support room topic change event. Close #85.