1.6 is out!

Important fixes!

• Made bigdl run rename the file prior to running, so that programs that may expect their names to be an exact one will now work
• Removed some redundant lines
• Added new filters
• Added global filtering logic
• Made the fsearch.go function rely on the global filtering logic
• bigdl search now shows you when a binary is available but not in bigdl's $INSTALL_DIR using the [I] indicator. ([i] means available in $INSTALL_DIR ($HOME/.local/bin if $INSTALL_DIR is not set), [c] means Cached, [-] means not installed/available...)
• Adapted info.go to use the global filtering logic