Change package names from address to zookeep

[lamlaaaam]

Resolves #132

[codecov]

Codecov Report

Merging #190 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master     #190   +/-   ##
=========================================
  Coverage     72.54%   72.54%           
  Complexity      516      516           
=========================================
  Files            83       83           
  Lines          1548     1548           
  Branches        154      154           
=========================================
  Hits           1123     1123           
  Misses          370      370           
  Partials         55       55           

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/seedu/zookeep/AppParameters.java	75.00% <ø> (ø)	9.00 <0.00> (?)
src/main/java/seedu/zookeep/Main.java	0.00% <ø> (ø)	0.00 <0.00> (?)
src/main/java/seedu/zookeep/MainApp.java	0.00% <ø> (ø)	0.00 <0.00> (?)
...c/main/java/seedu/zookeep/commons/core/Config.java	68.18% <ø> (ø)	7.00 <0.00> (?)
...n/java/seedu/zookeep/commons/core/GuiSettings.java	69.23% <ø> (ø)	5.00 <0.00> (?)
...in/java/seedu/zookeep/commons/core/LogsCenter.java	78.37% <ø> (ø)	10.00 <0.00> (?)
...main/java/seedu/zookeep/commons/core/Messages.java	0.00% <ø> (ø)	0.00 <0.00> (?)
.../main/java/seedu/zookeep/commons/core/Version.java	82.50% <ø> (ø)	19.00 <0.00> (?)
...n/java/seedu/zookeep/commons/core/index/Index.java	100.00% <ø> (ø)	10.00 <0.00> (?)
...ep/commons/exceptions/DataConversionException.java	100.00% <ø> (ø)	1.00 <0.00> (?)
... and 73 more

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