Build core objects in subdirectory, fixes issue #82
Merge pull request #218 from sej7278/master

Build core objects in subdirectory, fix issue #82 and fix #218
Bump up version to v1.3.4 for release
Made all the changes into one commit that could be a patch for master
Merge pull request #222 from sej7278/1.5

Start of 1.5 development
Remove "./" in "make clean" to clean any OBJDIR & change "tinyladi" to "ladislas" in HISTORY.md
Merge pull request #224 from WeAreLeka/update_objdir_clean

Allow "make clean" of any OBJDIR
Add "Interfacing with other projects" section in README
Add information about `Bare-Arduino-Project` in README

Fix #220
Fix #221
Fix #225