fix "java.lang.IllegalAccessError"

[liaction]

In kotlin, it give me an error :
java.lang.IllegalAccessError: Illegal class access: 'com.ahamed.sample.SampleAdapter' attempting to access 'com.ahamed.multiviewadapter.BaseDataManager'

Just change 'com.ahamed.multiviewadapter.BaseDataManager' to public.

[codecov-io]

Codecov Report

Merging #23 into master will decrease coverage by 26.66%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master      #23       +/-   ##
=============================================
- Coverage     54.37%   27.71%   -26.67%     
- Complexity        0       88       +88     
=============================================
  Files            17       17               
  Lines           765      765               
  Branches        101      101               
=============================================
- Hits            416      212      -204     
- Misses          310      522      +212     
+ Partials         39       31        -8

Impacted Files	Coverage Δ	Complexity Δ
...a/com/ahamed/multiviewadapter/BaseDataManager.java	57.57% <ø> (-18.19%)	26 <0> (+26)
...ahamed/multiviewadapter/util/DiffUtilCallback.java	0% <0%> (-90%)	0% <0%> (ø)
...va/com/ahamed/multiviewadapter/BaseViewHolder.java	0% <0%> (-86.67%)	0% <0%> (ø)
...a/com/ahamed/multiviewadapter/DataListManager.java	19.23% <0%> (-80.77%)	3% <0%> (+3%)
...a/com/ahamed/multiviewadapter/DataItemManager.java	20% <0%> (-80%)	1% <0%> (+1%)
...ed/multiviewadapter/util/PositionTypeResolver.java	0% <0%> (-66.67%)	0% <0%> (ø)
...ahamed/multiviewadapter/DataListUpdateManager.java	23.07% <0%> (-59.62%)	6% <0%> (+6%)
.../com/ahamed/multiviewadapter/DataGroupManager.java	25.75% <0%> (-53.04%)	9% <0%> (+9%)
...n/java/com/ahamed/multiviewadapter/ItemBinder.java	5.55% <0%> (-47.23%)	1% <0%> (+1%)
...a/com/ahamed/multiviewadapter/RecyclerAdapter.java	35.29% <0%> (-41.18%)	6% <0%> (+6%)
... and 3 more

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[DevAhamed]

Thanks for your contribution.

But i am skeptical about making the BaseDataManager class as public. But instead i have another work-around to fix the issue. Sorry i have to reject and close this pr.