OMB - Major Refactor (#39)

* OMB - Major Refactor

- Aliases and completions now works like plugins (need to enabled in .bashrc)
- Removed the compatible check in spectrum.sh, OMB now works with Bash v3.x like the old days.
- Removed core plugin, added those bash functions into base.sh and load during startup.
- Updated OSH template for new installations
- Added history config and few other stuff from #17

@TODO: Added a shell script to update old version of .bashrc to new one.

* Fixed ShellCheck issues

* Fixed ShellCheck issues

lib/history.sh

@@ -3,11 +3,53 @@ shopt -s histappend # append to bash_history if Terminal.app quits
 
 ## Command history configuration
 if [ -z "$HISTFILE" ]; then
-    HISTFILE=$HOME/.bash_history
+  HISTFILE=$HOME/.bash_history
 fi
 
-HISTSIZE=10000
-SAVEHIST=10000
+
+# some moderate history controls taken from sensible.bash
+## SANE HISTORY DEFAULTS ##
+
+# Append to the history file, don't overwrite it
+shopt -s histappend
+
+# Save multi-line commands as one command
+shopt -s cmdhist
+
+# use readline on history
+shopt -s histreedit
+
+# load history line onto readline buffer for editing
+shopt -s histverify
+
+# save history with newlines instead of ; where possible
+shopt -s lithist
+
+# Record each line as it gets issued
+PROMPT_COMMAND='history -a'
+
+# Huge history. Doesn't appear to slow things down, so why not?
+HISTSIZE=500000
+HISTFILESIZE=100000
+
+# Avoid duplicate entries
+HISTCONTROL="erasedups:ignoreboth"
+
+# Don't record some commands
+export HISTIGNORE="&:[ ]*:exit:ls:bg:fg:history:clear"
+
+# Use standard ISO 8601 timestamp
+# %F equivalent to %Y-%m-%d                                                                                      
+# %T equivalent to %H:%M:%S (24-hours format)
+HISTTIMEFORMAT='%F %T '
+
+# Enable incremental history search with up/down arrows (also Readline goodness)
+# Learn more about this here: http://codeinthehole.com/writing/the-most-important-command-line-tip-incremental-hi
+# bash4 specific ??
+bind '"\e[A": history-search-backward'
+bind '"\e[B": history-search-forward'
+bind '"\e[C": forward-char'
+bind '"\e[D": backward-char'
 
 # Show history
 #case $HIST_STAMPS in
@@ -16,12 +58,3 @@ SAVEHIST=10000
   #"yyyy-mm-dd") alias history='fc -il 1' ;;
   #*) alias history='fc -l 1' ;;
 #esac
-
-#shopt append_history
-#shopt extended_history
-#shopt hist_expire_dups_first
-#shopt hist_ignore_dups # ignore duplication command history list
-#shopt hist_ignore_space
-#shopt hist_verify
-#shopt inc_append_history
-#shopt share_history # share command history data