Retain reactivity when using transactions

[vitusortner]

Resolves #152
Resolves #106

[codecov]

Codecov Report

Merging #153 into develop will increase coverage by 1.83%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           develop    #153      +/-   ##
==========================================
+ Coverage    75.57%   77.4%   +1.83%     
==========================================
  Files           48      48              
  Lines         1351    1359       +8     
==========================================
+ Hits          1021    1052      +31     
+ Misses         330     307      -23

Impacted Files	Coverage Δ
floor_generator/lib/writer/database_writer.dart	78.12% <100%> (+3.12%)	⬆️
...enerator/lib/writer/transaction_method_writer.dart	100% <100%> (+100%)	⬆️
floor_generator/lib/processor/dao_processor.dart	100% <0%> (+4.65%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 502dae3...e46ff9f. Read the comment docs.