ISSUE-97: Renaming column does not drops column on morphTable

[BeMySlaveDarlin]

Hello!

• Type: bug fix
• Link to issue: Change column modification behaviour during table morph #97

In raising this pull request, I confirm the following (please check boxes):

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR

Small description of change:
During table morphing, if table column was just renamed, it will drop it and add new one, which will cause data loss.

Changed behavior to checking field meta and neighbours to process correct morphing

Thanks

[codecov]

Codecov Report

Merging #123 (1b6b57d) into master (0e76b22) will increase coverage by 1.52%.
The diff coverage is 90.00%.

@@             Coverage Diff              @@
##             master     #123      +/-   ##
============================================
+ Coverage     56.20%   57.72%   +1.52%     
- Complexity      529      550      +21     
============================================
  Files            21       22       +1     
  Lines          1482     1533      +51     
============================================
+ Hits            833      885      +52     
+ Misses          649      648       -1