increased version to 0.8.3
[Controller] set default value for $vars
[Controller] rewrite _post method
[Controller] rewrite _redirectTo method
[Controller] add _httpredirect method
update headers config
[Router] add getBaseURL function (without BaseURI)
[Router] rewrite getBaseHref (use getBaseURL)
fixed array_column helper
add array_plus helper function
renaming helper file from "main_functions" to "main"
[Bootstrap] changes in display_errors and error_reporting
[Memory] fixed some errors in php 5.5
[Database] improved connection, break class inheritance
add option connection_mode into database config
increased version to 0.8.4
Merge pull request #49 from tsapeta/0.8.x

release v0.8.4