Fix several bugs in Topiarist

[andy-berry-dev]

Raising this issue here since the bugs themselves are in the Topiarist repo.

Things to fix:

• - Bring isA in line with the rest of the methods - Bring isA in line with the rest of the methods topiarist#9
• - Topiarist does not work in IE8 without es5-shim - Topiarist does not work in IE8 without es5-shim topiarist#10
• - Error implementing interface in IE8 in a complex inheritance hierarchy - Error implementing interface in IE8 in a complex inheritance hierarchy topiarist#11
• - Allow topiarist.implement() to appear at the top of the class definition - Allow topiarist.implement() to appear at the top of the class definition topiarist#6. This is related to br.implement does not work with classes that have aliases #827 (br.implement does not work with classes that have aliases)
• - Update browsers used in test - Update browsers used in test topiarist#13
• - Pull request, Cleanup the code so it conforms to the Caplin code style - Cleanup the code so it conforms to the Caplin code style topiarist#14
• - Pull requestr, Bugfix es5 shim - Bugfix es5 shim topiarist#12

[dchambers]

The particular bug we need to fix that is high priority is BladeRunnerJS/topiarist#11.

[ioanalianabalas]

Issue BladeRunnerJS/topiarist#9 has now been fixed by BladeRunnerJS/topiarist/pull/20.

We are waiting for feedback from @fauna5 in regards to BladeRunnerJS/topiarist#11 as I could not replicate it.

[avsmithy]

Topiarist PR20 has been tested and merged.

BRJS 1190/PR1194 has been tested and merged.

I can't see any other issues mentioned here that have not already been closed, so can we close this ticket?