dmd 2.071 visibility warnings

[shishkander]

I'm not 100% certain of the visibility rules any more, so I'm not sure if below warnings are a bug in DMD or actually incorrect D usage by tested that evaded compiler for so long.

tested/example$ dmd --version
DMD64 D Compiler v2.071.0
Copyright (c) 1999-2015 by Digital Mars written by Walter Bright

tested/example$ dub test
No source files found in configuration 'library'. Falling back to "dub -b unittest".
Performing "unittest" build using dmd for x86_64.
tested ~master: building configuration "library"...
tested-example ~master: building configuration "application"...
../source/tested.d(270,21): Deprecation: app.object is not visible from module tested
../source/tested.d(271,27): Deprecation: app.object is not visible from module tested
../source/tested.d(270,21): Deprecation: app.tested is not visible from module tested
../source/tested.d(271,27): Deprecation: app.tested is not visible from module tested
../source/tested.d(272,17): Deprecation: app.tested is not visible from module tested
Linking...
Running ./tested-example 
PASS "arithmetic" (app.__unittestL26_2) after 0.000000 s
FAIL "arithmetic2" (app.__unittestL36_3) after 0.000013 s: unittest failure
PASS "int array" (app.__unittestL43_4) after 1.106415 s
FAIL "limited int array" (app.__unittestL56_5) after 0.994495 s: Too many items
PASS "recursion must be terminated" (app.Recursion.__unittestL75_6) after 0.000000 s
===========================
3 of 5 tests have passed.

FINAL RESULT: FAILED
core.exception.AssertError@source/app.d(20): Unit tests failed.
...