Nope! At least, he hasn't yet, as of the 575 episodes! Let's hope it stays that way!
Nope, it's done :)
Heiji Rebellion happened on 1160-02-05.
So far no, but there is a chance that in future, Heiji will confess to Kazuha.
The cast of Akogi no Heiji - 1914 includes: Matsunosuke Onoe
The cast of Akogi Heiji - 1922 includes: Matsunosuke Onoe
(spoiler alert!) Heiji dies somewhere in the series after being shot or something. I'm not exactly sure when this happens, but i do know that it does. Edit: Actually, Heiji does not die, but is shot when Conan, Ran, and Kogoro go for a trip to Osaka (also the episode where we are introduced to Kazuha.) Don't worry, he's still alive.
yes, because everytime kazuha was in danger heiji is the one who is worried and saving her even he doesn't sometimes admits it...
Heiji shows up in the episode 47-48. It is a showdown between Kudo shinichi and himself.
cased = aruz (ארוז)
I would answer this if i knew what you meant by "cased".
The question is too ambiguous to answer. The word "cased" is used in slang to describe robbers having targeted a house to rob, but that does not make sense in a dream. A person might be "encased" in the sense of being closed into a trunk or other container, but that does not seem to be the asker's intent.
people interrupted the Japanese peace