Added wordlist as option for context index creation.
FIX specs with schema creation didn't see spec instance variables
ADD virtual columns new syntax in create_table migrations\dump
FIX set defaults to nil for virtual columns
ADD virtual columns support in add_column migration helper
ADD virtual columns support to change_column migration helper
FIX dump virtual column type as symbol
ADD test for changing virtual column type
ADD support for :default option in virtual column definintion (for backward compatibility)
FIX corruption of virtual_column_data_default instance variable due to direct string update
FIX incorrect dumping of virtual column expression due to cleaning of data_default
Fix deprecated ActiveRecord#set_table_name in spec
Fix decimal column value type in specs
Added RSpec test for correct handling of multi-column and function indexes.
Fix index name quoting
Merge pull request #161 from cosine/function_indexes

Fix to dump function indexes correctly
Add virtual columns section to README.md
Merge pull request #154 from tmikoss/master

Wordlist option for context index
Contributors can be seen in https://github.com/rsim/oracle-enhanced/contributors
Merge pull request #159 from mkurkov/virtual_columns_support_1.4.1

Virtual columns support 1.4.1