Update History.md to show 1.4.2 changes
Merge pull request #249 from yahonda/update_readme_v142

Update History.md to show 1.4.2 changes
don't specify column type in schema dump for NUMBER virtual columns
fix typo
Merge pull request #256 from govdelivery/master

don't dump type for NUMBER virtual columns
Remove `:nls_characterset` and `:nls_nchar_characterset`
from optionals NLS parameters

Oracle does not support change these parameters at session level.
Merge pull request #266 from yahonda/nls_support

Remove `:nls_characterset` and `:nls_nchar_characterset` from NLS optional parameters
Added note about Tomcat Usage

Tomcat requires to set the accessToUnderlyingConnectionAllowed to true in the context.xml file. Otherwise, weird errors pop up (undefined method 'meta_data' for nil:NilClass)
Merge pull request #267 from Xylakant/patch-1

Added note about JNDI Usage with tomcat